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1844 Democratic Party presidential primaries

May 27–29, 1844

Nominee Martin Van Buren Lewis Cass John C. Calhoun Home state New York Michigan South Carolina Contests won 12 9 1 Popular vote 309,540 117,324 112,371 Percentage 40.2% 15.2% 14.6%   Candidate Richard M. Johnson Levi Woodbury James Buchanan Home state Kentucky New Hampshire Pennsylvania Contests won 2 0 2 Popular vote 96,058 76,630 58,151 Percentage 12.5% 10.0% 7.6%

Previous Democratic nominee Martin Van Buren Democratic nominee Lewis Cass

1844 Whig Party presidential primaries

May 1, 1844

Nominee John Quincy Adams Daniel Webster Winfield Scott Home state Massachusetts Massachusetts New Jersey Contests won 9 8 5 Popular vote 277,164 250,826 117,208 Percentage 31.0% 28.0% 13.1%   Candidate John M. Clayton William H. Seward John McLean Home state Delaware New York Ohio Contests won 1 2 1 Popular vote 90,481 89,719 69,208 Percentage 10.1% 10.0% 7.7%

Previous Whig nominee William Henry Harrison Whig nominee Daniel Webster

1848 Democratic Party presidential primaries

May 22–25, 1848

Nominee James K. Polk Martin Van Buren Levi Woodbury Home state Tennessee New York New Hampshire Contests won 24 1 3 Popular vote 327,509 119,815 103,498 Percentage 42.4% 15.5% 13.4%   Candidate James Buchanan John C. Calhoun Home state Pennsylvania South Carolina Contests won 1 0 Popular vote 98,532 86,439 Percentage 12.7% 11.2%

Previous Democratic nominee James K. Polk Democratic nominee James K. Polk

1852 Democratic Party presidential primaries

June 1–5, 1852

Nominee James Buchanan Lewis Cass William L. Marcy Home state Pennsylvania Michigan New York Contests won 12 9 4 Popular vote 397,429 216,365 185,716 Percentage 39.6% 21.5% 18.5%   Candidate Sam Houston Stephen A. Douglas Home state Texas Illinois Contests won 2 4 Popular vote 105,155 99,989 Percentage 10.5% 10.0%

Previous Democratic nominee Lewis Cass Democratic nominee William L. Marcy

1852 Whig Party presidential primaries

June 17–20, 1852

Nominee Millard Fillmore John J. Crittenden William H. Seward Home state New Jersey Kentucky New York Contests won 18 4 2 Popular vote 365,267 212,758 140,350 Percentage 39.7% 23.1% 15.2%   Candidate Daniel Webster Abraham Lincoln Home state Massachusetts Illinois Contests won 6 1 Popular vote 115,479 86,569 Percentage 12.5% 9.4%

Previous Whig nominee Zachary Taylor Whig nominee Millard Fillmore

1856 Democratic Party presidential primaries

June 2–6, 1856

Nominee Stephen A. Douglas Franklin Pierce William L. Marcy Home state Illinois New Hampshire New York Contests won 8 14 5 Popular vote 410,853 310,367 253,715 Percentage 33.7% 25.4% 20.8%   Candidate Lewis Cass Jefferson Davis Home state Michigan Mississippi Contests won 2 2 Popular vote 140,724 105,035 Percentage 11.5% 8.6%

Previous Democratic nominee Franklin Pierce Democratic nominee Stephen A. Douglas

1856 Republican Party presidential primaries

June 17–19, 1856

Nominee William H. Seward John McLean Abraham Lincoln Home state New York Ohio Illinois Contests won 12 4 5 Popular vote 324,602 175,428 159,179 Percentage 37.5% 20.3% 18.4%   Candidate Charles Sumner Nathaniel P. Banks Home state Massachusetts Massachusetts Contests won 4 1 Popular vote 134,666 63,302 Percentage 15.6% 7.3%

Previous Republican nominee Party established Republican nominee William H. Seward

1860 Democratic Party presidential primaries

June 18–23, 1860

Nominee Horatio Seymour James Buchanan Lewis Cass Home state New York Pennsylvania Michigan Contests won 9 10 1 Popular vote 3,570,411 3,100,482 1,922,757 Percentage 25.6% 22.2% 13.8%   Nominee James Guthrie Jefferson Davis Daniel S. Dickinson Home state Kentucky Mississippi New York Contests won 1 1 0 Popular vote 992,633 864,274 836,573 Percentage 7.1% 6.2% 6.0%   Nominee Franklin Pierce Joseph Lane Andrew Johnson Home state New Hampshire Oregon Tennessee Contests won 2 2 1 Popular vote 828,934 755,466 555,559 Percentage 5.9% 5.4% 4.0%

Previous Democratic nominee James Buchanan Democratic nominee Horatio Seymour

1860 Republican Party presidential primaries

May 16–18, 1860

Nominee William H. Seward John C. Frémont Simon Cameron Home state New York California Pennsylvania Contests won 7 4 6 Popular vote 3,663,465 3,626,016 2,403,126 Percentage 20.7% 20.5% 13.6%   Nominee John McLean Benjamin Wade Salmon P. Chase Home state Ohio Ohio Ohio Contests won 0 0 1 Popular vote 2,230,520 2,110,082 1,004,881 Percentage 12.6% 11.9% 5.7%   Nominee Charles Sumner Edward Bates William L. Dayton Home state Massachusetts Missouri New Jersey Contests won 1 3 2 Popular vote 754,090 738,811 628,071 Percentage 4.3% 4.2% 3.5%

Previous Republican nominee John C. Frémont Republican nominee William H. Seward

1864 Democratic Party presidential primaries

August 29–31, 1864

Nominee Horatio Seymour Andrew Johnson James Buchanan Home state New York Tennessee Pennsylvania Contests won 15 6 0 Popular vote 309,799 230,563 156,814 Percentage 26.3% 19.6% 13.3%   Nominee Thomas H. Seymour Franklin Pierce Clement Vallandigham Home state Connecticut New Hampshire Ohio Contests won 2 1 1 Popular vote 153,598 102,924 96,301 Percentage 13.0% 8.7% 8.2%   Nominee Millard Fillmore Charles O'Conor Home state New York New York Contests won 1 1 Popular vote 76,206 50,868 Percentage 6.5% 4.3%

Previous Democratic nominee Stephen A. Douglas (Northern Democratic) John C. Breckinridge (Southern Democratic) Democratic nominee Horatio Seymour

1864 Republican Party presidential primaries

June 7–8, 1864

Nominee Ulysses S. Grant Salmon P. Chase Simon Cameron Home state Illinois Ohio Pennsylvania Contests won 21 3 1 Popular vote 477,860 289,264 238,040 Percentage 35.0% 21.2% 17.4%   Nominee Charles Sumner Benjamin Wade John C. Frémont Home state Massachusetts Ohio California Contests won 1 0 0 Popular vote 130,663 109,368 75,433 Percentage 9.6% 8.0% 5.5%   Nominee Benjamin F. Butler Home state Massachusetts Contests won 1 Popular vote 44,163 Percentage 3.2%

Previous Republican nominee Abraham Lincoln Republican nominee Ulysses S. Grant

1868 Democratic Party presidential primaries

July 4–9, 1868

Nominee Sanford E. Church George H. Pendleton Asa Packer Home state New York Ohio Pennsylvania Contests won 1 10 1 Popular vote 255,742 205,447 176,795 Percentage 14.8% 11.9% 10.2%   Nominee George B. McClellan Stephen J. Field Thomas A. Hendricks Home state New Jersey California Indiana Contests won 0 1 2 Popular vote 135,918 133,648 113,405 Percentage 7.9% 7.7% 6.6%   Nominee James Rood Doolittle Winfield Scott Hancock James E. English Home state Wisconsin Pennsylvania Connecticut Contests won 2 2 5 Popular vote 104,246 88,458 87,026 Percentage 6.0% 5.1% 5.0%

Previous Democratic nominee George B. McClellan Democratic nominee Asa Packer

1868 Republican Party presidential primaries

May 20–21, 1868

Nominee Abraham Lincoln William H. Seward Simon Cameron Home state Illinois New York Pennsylvania Contests won 26 4 1 Popular vote 452,743 350,446 193,294 Percentage 25.5% 19.8% 10.9%   Nominee Salmon P. Chase Roscoe Conkling Benjamin Wade Home state Ohio New York Ohio Contests won 0 1 0 Popular vote 191,136 120,486 110,567 Percentage 10.8% 6.8% 6.2%   Nominee Benjamin F. Butler John Sherman James G. Blaine Home state Massachusetts Ohio Maine Contests won 0 1 1 Popular vote 94,888 94,027 17,276 Percentage 5.4% 5.3% 1.0%

Previous Republican nominee Abraham Lincoln Republican nominee Abraham Lincoln

1872 Democratic Party presidential primaries

July 9–10, 1872

Nominee Thomas A. Hendricks Samuel J. Tilden Horatio Seymour Home state Indiana New York New York Contests won 9 7 4 Popular vote 1,719,259 1,658,632 1,534,527 Percentage 10.7% 10.3% 9.5%   Nominee Allen G. Thurman Winfield Scott Hancock Francis P. Blair, Jr. Home state Ohio Pennsylvania Missouri Contests won 5 1 1 Popular vote 1,399,434 1,322,121 1,031,763 Percentage 8.7% 8.2% 6.4%   Nominee Thomas F. Bayard George B. McClellan Salmon P. Chase Home state Delaware New Jersey Ohio Contests won 2 1 0 Popular vote 1,018,106 1,006,459 943,218 Percentage 6.3% 6.3% 5.9%

Previous Democratic nominee Horatio Seymour Democratic nominee Allen G. Thurman

1872 Republican Party presidential primaries

June 5–6, 1872

Nominee Roscoe Conkling Simon Cameron Adelbert Ames Home state New York Pennsylvania Mississippi Contests won 1 4 10 Popular vote 1,612,852 1,597,202 1,378,965 Percentage 9.6% 9.6% 8.2%   Nominee Rutherford B. Hayes John Sherman Schuyler Colfax Home state Ohio Ohio Indiana Contests won 0 3 1 Popular vote 1,329,600 1,313,786 1,240,921 Percentage 8.0% 7.9% 7.4%   Nominee John M. Palmer Joseph R. Hawley William Windom Home state Illinois Connecticut Minnesota Contests won 5 0 1 Popular vote 1,188,324 828,156 799,562 Percentage 7.1% 5.0% 4.8%

Previous Republican nominee Ulysses S. Grant Republican nominee John Sherman

1872 Liberal Republican Party presidential primaries

May 1–3, 1872

Nominee Charles Francis Adams Benjamin Gratz Brown Andrew Curtin Home state Massachusetts Missouri Pennsylvania Contests won 37 0 0 Popular vote 10,582,244 2,862,298 2,368,332 Percentage 54.9% 14.8% 12.3%   Nominee Lyman Trumbull David Davis Home state Illinois Illinois Contests won 0 0 Popular vote 1,637,757 1,164,953 Percentage 8.5% 6.0%

Previous Liberal Republican nominee Party established Liberal Republican nominee Charles Francis Adams

1876 Democratic Party presidential primaries

June 27–29, 1876

Nominee Thomas A. Hendricks Thomas F. Bayard Horatio Seymour Home state Indiana Delaware New York Contests won 12 6 3 Popular vote 644,450 371,026 316,005 Percentage 23.0% 13.3% 11.3%   Nominee Allen G. Thurman Winfield Scott Hancock John B. Gordon Home state Ohio Pennsylvania Georgia Contests won 8 1 4 Popular vote 304,147 279,673 201,720 Percentage 10.9% 10.0% 7.2%   Nominee William Allen George B. McClellan Joel Parker Home state Ohio New Jersey New Jersey Contests won 1 1 1 Popular vote 157,552 157,186 150,563 Percentage 5.6% 5.6% 5.4%

Previous Democratic nominee Horace Greeley Democratic nominee Horatio Seymour

1876 Republican Party presidential primaries

June 14–16, 1876

Nominee Ulysses S. Grant James G. Blaine Roscoe Conkling Home state Illinois Maine New York Contests won 7 15 1 Popular vote 685,047 428,929 302,795 Percentage 26.6% 16.6% 11.7%   Nominee John F. Hartranft Oliver P. Morton Marshall Jewell Home state Pennsylvania Indiana Connecticut Contests won 1 7 1 Popular vote 279,803 239,753 218,102 Percentage 10.9% 9.3% 8.5%   Nominee Benjamin H. Bristow Elihu B. Washburne Home state Kentucky Illinois Contests won 6 1 Popular vote 211,247 35,155 Percentage 8.2% 1.4%

Previous Republican nominee Ulysses S. Grant Republican nominee Oliver P. Morton

1880 Democratic Party presidential primaries

June 22–24, 1880

Nominee Horatio Seymour Allen G. Thurman Samuel J. Tilden Home state New York Ohio New York Contests won 35 0 0 Popular vote 1,391,041 410,607 365,292 Percentage 37.3% 11.0% 9.8%   Nominee Thomas A. Hendricks Stephen J. Field Thomas F. Bayard Home state Indiana California Delaware Contests won 0 2 0 Popular vote 240,321 229,822 188,334 Percentage 6.4% 6.2% 5.0%   Nominee William R. Morrison Home state Illinois Contests won 1 Popular vote 122,448 Percentage 3.3%

Previous Democratic nominee Samuel J. Tilden Democratic nominee Horatio Seymour

1880 Republican Party presidential primaries

June 2–8, 1880

Nominee James G. Blaine Rutherford B. Hayes George F. Edmunds Home state Maine Ohio Vermont Contests won 18 3 3 Popular vote 547,687 412,246 382,139 Percentage 20.5% 15.4% 14.3%   Nominee Ulysses S. Grant John Sherman Robert Todd Lincoln Home state Illinois Ohio Illinois Contests won 7 5 1 Popular vote 371,104 368,851 222,466 Percentage 13.9% 13.8% 8.3%   Nominee William Windom Home state Minnesota Contests won 1 Popular vote 100,563 Percentage 3.8%

Previous Republican nominee Rutherford B. Hayes Republican nominee Robert Todd Lincoln

1884 Democratic Party presidential primaries

July 8–11, 1884

Nominee Thomas A. Hendricks Thomas F. Bayard Winfield Scott Hancock Home state Indiana Delaware Pennsylvania Contests won 6 13 2 Popular vote 472,470 455,186 354,416 Percentage 14.0% 13.5% 10.5%   Nominee Samuel J. Tilden Joseph E. McDonald Allen G. Thurman Home state New York Indiana Ohio Contests won 3 3 2 Popular vote 352,916 299,795 272,126 Percentage 10.5% 8.9% 8.1%   Nominee John B. Gordon Wade Hampton III John G. Carlisle Home state Georgia South Carolina Kentucky Contests won 3 1 1 Popular vote 230,872 207,383 199,354 Percentage 6.9% 6.2% 5.9%

Previous Democratic nominee Winfield Scott Hancock Democratic nominee Thomas A. Hendricks

1884 Republican Party presidential primaries

June 3–6, 1884

Nominee William Tecumseh Sherman Ulysses S. Grant Philip Sheridan Home state Ohio Illinois New York Contests won 16 2 3 Popular vote 561,202 393,411 357,895 Percentage 18.8% 13.2% 12.0%   Nominee Chester A. Arthur John A. Logan John Sherman Home state New York Illinois Ohio Contests won 8 1 1 Popular vote 254,062 236,974 182,379 Percentage 8.5% 8.0% 6.1%   Nominee Rutherford B. Hayes Joseph R. Hawley Benjamin Harrison Home state Ohio Connecticut Indiana Contests won 0 1 1 Popular vote 176,876 171,580 168,754 Percentage 5.9% 5.8% 5.7%

Previous Republican nominee James A. Garfield Republican nominee Chester A. Arthur

1888 Democratic Party presidential primaries

June 5–7, 1888

Nominee William Henry Fitzhugh Lee Richard P. Bland Wade Hampton III Home state Virginia Missouri South Carolina Contests won 8 14 3 Popular vote 692,713 573,336 500,186 Percentage 24.0% 19.9% 17.4%   Nominee Fitzhugh Lee John B. Gordon John Quincy Adams II Home state Virginia Georgia Massachusetts Contests won 4 2 6 Popular vote 456,540 350,442 156,231 Percentage 15.8% 12.2% 5.4%   Nominee Simon Bolivar Buckner Home state Kentucky Contests won 1 Popular vote 152,476 Percentage 5.3%

Previous Democratic nominee Grover Cleveland Democratic nominee Richard P. Bland

1888 Republican Party presidential primaries

June 5–7, 1888

Nominee James G. Blaine Walter Q. Gresham John Sherman Home state Maine Indiana Ohio Contests won 13 3 7 Popular vote 490,415 380,574 311,196 Percentage 15.8% 12.2% 10.0%   Nominee Chauncey Depew William B. Allison John J. Ingalls Home state New York Iowa Kansas Contests won 2 3 3 Popular vote 251,462 243,233 240,742 Percentage 8.1% 7.8% 7.7%   Nominee Russell A. Alger Jeremiah M. Rusk Frederick Dent Grant Home state Michigan Wisconsin New York Contests won 3 2 0 Popular vote 237,720 212,417 167,546 Percentage 7.6% 6.8% 5.4%

Previous Republican nominee James G. Blaine Republican nominee Russell A. Alger

1892 Democratic Party presidential primaries

June 21–23, 1892

Nominee Robert E. Pattison Wade Hampton III Richard P. Bland Home state Pennsylvania South Carolina Missouri Contests won 16 14 2 Popular vote 1,011,714 631,667 435,938 Percentage 28.0% 17.5% 12.0%   Nominee Adlai Stevenson David B. Hill Horace Boies Home state Illinois New York Iowa Contests won 1 4 4 Popular vote 385,115 336,148 318,315 Percentage 10.6% 9.3% 8.8%   Nominee John G. Carlisle Arthur P. Gorman Home state Kentucky Maryland Contests won 1 2 Popular vote 260,229 240,509 Percentage 7.2% 6.6%

Previous Democratic nominee Grover Cleveland Democratic nominee Robert E. Pattison

1892 Republican Party presidential primaries

June 7–10, 1892

Nominee William McKinley John Sherman Robert Todd Lincoln Home state Ohio Ohio Vermont Contests won 15 8 6 Popular vote 1,040,377 869,940 628,027 Percentage 30.3% 25.4% 18.3%   Nominee James G. Blaine Thomas Brackett Reed Henry Cabot Lodge Home state Maine Maine Massachusetts Contests won 15 2 1 Popular vote 568,474 220,388 101,117 Percentage 16.6% 6.4% 2.9%

Previous Republican nominee Benjamin Harrison Republican nominee Robert Todd Lincoln

1896 Democratic Party presidential primaries

July 7–11, 1896

Nominee John R. McLean Joseph C. S. Blackburn Grover Cleveland Home state Ohio Kentucky New York Contests won 22 8 1 Popular vote 1,193,609 689,943 529,264 Percentage 29.6% 17.1% 13.1%   Nominee Horace Boies Richard P. Bland Robert E. Pattison Home state Iowa Missouri Pennsylvania Contests won 3 6 4 Popular vote 513,627 434,675 374,150 Percentage 12.7% 10.8% 9.3%   Nominee Claude Matthews Home state Indiana Contests won 1 Popular vote 302,791 Percentage 7.5%

Previous Democratic nominee Grover Cleveland Democratic nominee John R. McLean

1896 Republican Party presidential primaries

June 16–18, 1896

Nominee Benjamin Harrison Henry Cabot Lodge Robert Todd Lincoln Home state Indiana Massachusetts Vermont Contests won 28 4 1 Popular vote 1,001,022 929,011 699,801 Percentage 22.3% 20.7% 15.6%   Nominee William B. Allison Thomas Brackett Reed Matthew S. Quay Home state Iowa Maine Pennsylvania Contests won 5 6 1 Popular vote 602,041 541,475 520,100 Percentage 13.4% 12.1% 11.6%

Previous Republican nominee Benjamin Harrison Republican nominee Benjamin Harrison

1900 Democratic Party presidential primaries

July 4–6, 1900

Nominee George Dewey William Randolph Hearst Grover Cleveland Home state Vermont New York New York Contests won 12 22 11 Popular vote 1,608,189 1,541,250 864,848 Percentage 40.1% 38.4% 21.5%

Previous Democratic nominee William Jennings Bryan Democratic nominee George Dewey

1900 Republican Party presidential primaries

June 19–21, 1900

Nominee Theodore Roosevelt Robert M. La Follette Home state New York Wisconsin Contests won 27 18 Popular vote 703,825 207,960 Percentage 77.2% 22.8%

Previous Republican nominee William McKinley Republican nominee Theodore Roosevelt

1904 Democratic Party presidential primaries

July 6–10, 1904

Nominee Francis Cockrell Grover Cleveland Nelson A. Miles Home state Missouri New York Massachusetts Contests won 31 6 0 Popular vote 1,404,987 569,977 458,748 Percentage 34.8% 14.1% 11.4%   Nominee Edward C. Wall William Jennings Bryan William Randolph Hearst Home state Wisconsin Nebraska New York Contests won 1 4 1 Popular vote 330,013 309,993 276,282 Percentage 8.2% 7.7% 6.8%   Nominee George Gray John Sharp Williams Richard Olney Home state Delaware Mississippi Massachusetts Contests won 1 0 1 Popular vote 244,692 240,313 205,145 Percentage 6.1% 5.9% 5.1%

Previous Democratic nominee William Jennings Bryan Democratic nominee Francis Cockrell

1904 Republican Party presidential primaries

June 21–23, 1904

Nominee Charles W. Fairbanks Mark Hanna Home state Indiana Ohio Contests won 30 12 Popular vote 1,930,846 1,478,605 Percentage 42.2% 32.4%   Nominee Robert M. La Follette William Howard Taft Home state Wisconsin Ohio Contests won 3 0 Popular vote 617,799 543,296 Percentage 13.5% 11.9%

Previous Republican nominee William McKinley Republican nominee Charles W. Fairbanks

1908 Democratic Party presidential primaries

July 7–10, 1908

Nominee Alton B. Parker John A. Johnson George Gray Home state New York Minnesota Delaware Contests won 22 11 6 Popular vote 1,256,353 718,173 606,504 Percentage 37.4% 21.4% 18.1%   Nominee William Randolph Hearst Woodrow Wilson Home state New York New Jersey Contests won 2 5 Popular vote 478,784 297,399 Percentage 14.3% 8.9%

Previous Democratic nominee Alton B. Parker Democratic nominee John A. Johnson

1908 Republican Party presidential primaries

June 16–19, 1908

Nominee Theodore Roosevelt George B. Cortelyou Robert M. La Follette Home state New York New York Wisconsin Contests won 30 5 10 Popular vote 1,143,023 804,979 528,002 Percentage 31.9% 22.4% 14.7%   Nominee Elihu Root L. M. Shaw Joseph G. Cannon Home state New York Iowa Illinois Contests won 0 0 1 Popular vote 240,312 203,352 165,890 Percentage 6.7% 5.7% 4.6%

Previous Republican nominee Theodore Roosevelt Republican nominee Theodore Roosevelt

1912 Democratic Party presidential primaries

March 19–June 4, 1912

Nominee Champ Clark Oscar W. Underwood William Jennings Bryan Home state Missouri Alabama Nebraska Contests won 39 3 1 Popular vote 13,595,529 6,105,934 5,902,533 Percentage 35.7% 16.0% 15.5%   Nominee Simeon E. Baldwin Judson Harmon Thomas R. Marshall Home state Connecticut Ohio Indiana Contests won 2 3 0 Popular vote 4,924,674 4,182,939 2,226,553 Percentage 12.9% 11.0% 5.8%

Previous Democratic nominee William Jennings Bryan Democratic nominee Champ Clark

1912 Republican Party presidential primaries

March 19–June 4, 1912

Nominee Theodore Roosevelt Robert M. La Follette Home state New York Wisconsin Contests won 46 2 Popular vote 9,488,107 1,791,438 Percentage 84.1% 15.9%

Previous Republican nominee William Howard Taft Republican nominee Theodore Roosevelt

1916 Democratic Party presidential primaries

March 7–June 6, 1916

Nominee William Jennings Bryan Home state Nebraska Contests won 48 Popular vote 36,938,162 Percentage 100.0%

Previous Democratic nominee Woodrow Wilson Democratic nominee William Jennings Bryan

1916 Republican Party presidential primaries

March 7–June 6, 1916

Nominee Elihu Root Theodore Roosevelt Charles W. Fairbanks Home state New York New York Indiana Contests won 6 10 5 Popular vote 1,182,384 974,708 818,838 Percentage 21.0% 17.3% 14.5%   Nominee Theodore E. Burton Lawrence Y. Sherman Albert B. Cummins Home state Ohio Illinois Iowa Contests won 2 1 6 Popular vote 472,157 413,444 392,069 Percentage 8.4% 7.3% 7.0%   Nominee John W. Weeks William Howard Taft Martin G. Brumbaugh Home state Massachusetts Ohio Pennsylvania Contests won 5 1 2 Popular vote 382,268 236,009 176,900 Percentage 6.8% 4.2% 3.1%

Previous Republican nominee William Howard Taft Republican nominee Charles W. Fairbanks

1920 Democratic Party presidential primaries

March 9–June 5, 1920

Nominee A. Mitchell Palmer William Gibbs McAdoo Al Smith Home state Pennsylvania California New York Contests won 25 12 1 Popular vote 1,792,604 728,960 698,244 Percentage 24.1% 9.8% 9.4%   Nominee Oscar W. Underwood Thomas R. Marshall Carter Glass Home state Alabama Indiana Virginia Contests won 0 2 1 Popular vote 596,781 573,967 542,002 Percentage 8.0% 7.7% 7.3%   Nominee Edward I. Edwards John W. Davis William Jennings Bryan Home state New Jersey West Virginia Nebraska Contests won 1 1 1 Popular vote 519,477 391,180 372,238 Percentage 7.0% 5.3% 5.0%

Previous Democratic nominee Woodrow Wilson Democratic nominee A. Mitchell Palmer

1920 Republican Party presidential primaries

March 9–June 5, 1920

Nominee Robert M. La Follette Leonard Wood Charles Evans Hughes Home state Wisconsin New Hampshire New York Contests won 36 1 1 Popular vote 2,277,812 1,166,182 997,508 Percentage 23.1% 11.8% 10.1%   Nominee William Cameron Sproul Theodore Roosevelt John J. Pershing Home state Pennsylvania New York Missouri Contests won 2 1 2 Popular vote 926,270 917,123 851,192 Percentage 9.4% 9.3% 8.6%   Nominee Herbert Hoover Frank Orren Lowden Howard Sutherland Home state California Illinois West Virginia Contests won 4 1 0 Popular vote 599,871 595,243 490,399 Percentage 6.1% 6.0% 5.0%

Previous Republican nominee Charles Evans Hughes Republican nominee John J. Pershing

1924 Democratic Party presidential primaries

March 12–June 7, 1924

Nominee Albert Ritchie James M. Cox William Gibbs McAdoo Home state Maryland Ohio California Contests won 11 8 8 Popular vote 719,174 650,625 603,622 Percentage 12.1% 10.9% 10.1%   Nominee Al Smith Woodbridge Nathan Ferris William Jennings Bryan Home state New York Michigan Nebraska Contests won 4 1 2 Popular vote 531,272 393,407 356,751 Percentage 8.9% 6.6% 6.0%   Nominee Cordell Hull Oscar W. Underwood Carter Glass Home state Tennessee Alabama Virginia Contests won 2 3 1 Popular vote 347,765 321,386 234,328 Percentage 5.8% 5.4% 3.9%

Previous Democratic nominee James M. Cox Democratic nominee James M. Cox

1924 Republican Party presidential primaries

March 12–June 7, 1924

Nominee Warren G. Harding Herbert Hoover Home state Ohio California Contests won 38 4 Popular vote 3,971,108 2,335,985 Percentage 33.2% 19.5%   Nominee Frank Orren Lowden Charles Evans Hughes Home state Illinois New York Contests won 2 4 Popular vote 2,273,787 1,933,962 Percentage 19.0% 16.2%

Previous Republican nominee Warren G. Harding Republican nominee Herbert Hoover

1928 Democratic Party presidential primaries

March 6–May 18, 1928

Nominee James A. Reed Cordell Hull Franklin D. Roosevelt Home state Missouri Tennessee New York Contests won 17 12 3 Popular vote 2,433,177 1,344,509 918,744 Percentage 24.8% 13.7% 9.4%   Nominee Joseph T. Robinson Jesse H. Jones Thomas J. Walsh Home state Arkansas Texas Montana Contests won 4 3 5 Popular vote 816,584 784,607 690,842 Percentage 8.3% 8.0% 7.0%   Nominee Newton D. Baker Evans Woollen Pat Harrison Home state Ohio Indiana Mississippi Contests won 1 1 1 Popular vote 657,661 634,993 601,622 Percentage 6.7% 6.5% 6.1%

Previous Democratic nominee John W. Davis Democratic nominee Joseph T. Robinson

1928 Republican Party presidential primaries

March 6–May 18, 1928

Nominee Calvin Coolidge Frank Orren Lowden Charles Evans Hughes Home state Massachusetts Illinois New York Contests won 25 9 5 Popular vote 3,166,781 2,855,591 2,624,718 Percentage 24.1% 21.7% 20.0%   Nominee Charles Curtis James E. Watson Guy D. Goff Home state Kansas Indiana West Virginia Contests won 6 0 0 Popular vote 1,956,226 825,051 682,987 Percentage 14.9% 6.3% 5.2%   Nominee George W. Norris William E. Borah Home state Nebraska Idaho Contests won 1 2 Popular vote 398,461 282,300 Percentage 3.0% 2.1%

Previous Republican nominee Calvin Coolidge Republican nominee Frank Orren Lowden

1932 Democratic Party presidential primaries

March 8–May 20, 1932

Nominee Newton D. Baker J. Hamilton Lewis John Nance Garner Home state Ohio Illinois Texas Contests won 11 4 17 Popular vote 2,900,559 2,589,590 2,087,622 Percentage 22.0% 19.7% 15.9%   Nominee Cordell Hull Al Smith James A. Reed Home state Tennessee New York Missouri Contests won 3 9 4 Popular vote 1,927,716 1,840,283 1,816,521 Percentage 14.6% 14.0% 13.8%

Previous Democratic nominee Al Smith Democratic nominee John Nance Garner

1932 Republican Party presidential primaries

March 8–May 20, 1932

Nominee Calvin Coolidge Guy D. Goff Charles G. Dawes Home state Massachusetts West Virginia Illinois Contests won 34 9 0 Popular vote 4,799,947 2,173,533 1,240,071 Percentage 41.9% 19.0% 10.8%   Nominee John J. Blaine James W. Wadsworth, Jr. Joseph I. France Home state Wisconsin New York Maryland Contests won 0 1 0 Popular vote 1,128,522 990,794 628,558 Percentage 9.9% 8.7% 5.5%   Nominee William E. Borah Home state Idaho Contests won 4 Popular vote 484,077 Percentage 4.2%

Previous Republican nominee Herbert Hoover Republican nominee Calvin Coolidge

1936 Democratic Party presidential primaries

March 10–May 19, 1936

Nominee Cordell Hull Henry Skillman Breckinridge Home state Tennessee New York Contests won 36 6 Popular vote 6,317,680 3,947,533 Percentage 40.1% 25.1%   Nominee John Nance Garner Huey Long Home state Texas Louisiana Contests won 2 4 Popular vote 3,317,892 2,165,300 Percentage 21.1% 13.7%

Previous Democratic nominee Franklin D. Roosevelt Democratic nominee Cordell Hull

1936 Republican Party presidential primaries

March 10–May 19, 1936

Nominee Theodore Roosevelt Jr. Robert A. Taft Arthur H. Vandenberg Home state New York Ohio Michigan Contests won 11 5 5 Popular vote 3,184,954 2,347,323 2,148,679 Percentage 24.4% 18.0% 16.5%   Nominee Herbert Hoover William E. Borah John W. Bricker Home state California Idaho Ohio Contests won 17 8 1 Popular vote 2,082,999 1,723,581 1,530,747 Percentage 16.0% 13.2% 11.7%

Previous Republican nominee Herbert Hoover Republican nominee Theodore Roosevelt Jr.

1940 Democratic Party presidential primaries

March 12–June 27, 1940

Nominee Huey Long John Nance Garner Cordell Hull Home state Louisiana Texas Tennessee Contests won 38 5 4 Popular vote 6,236,642 3,773,315 3,359,916 Percentage 37.5% 22.7% 20.2%   Nominee Millard Tydings James A. Farley Home state Maryland New York Contests won 1 0 Popular vote 2,255,182 1,011,221 Percentage 13.6% 6.1%

Previous Democratic nominee Franklin D. Roosevelt Democratic nominee Huey Long

1940 Republican Party presidential primaries

March 12–May 17, 1940

Nominee Joseph W. Martin Jr. Herbert Hoover Fiorello H. La Guardia Home state Massachusetts California New York Contests won 13 18 3 Popular vote 2,572,818 2,152,889 1,220,357 Percentage 16.8% 14.1% 8.0%   Nominee Arthur H. Vandenberg Charles L. McNary Henry Cabot Lodge Jr. Home state Michigan Oregon Massachusetts Contests won 4 4 1 Popular vote 1,177,169 1,125,358 929,931 Percentage 7.7% 7.4% 6.1%   Nominee John W. Bricker Henry L. Stimson Robert A. Taft Home state Ohio New York Ohio Contests won 0 1 2 Popular vote 856,708 729,330 622,396 Percentage 5.6% 4.8% 4.1%

Previous Republican nominee Alf Landon Republican nominee Joseph W. Martin Jr.

1944 Democratic Party presidential primaries

March 14–May 19, 1944

Nominee Cordell Hull Harry F. Byrd Home state Tennessee Virginia Contests won 39 9 Popular vote 1,324,006 273,915 Percentage 79.2% 13.9%

Previous Democratic nominee Franklin D. Roosevelt Democratic nominee Cordell Hull

1944 Republican Party presidential primaries

March 14–May 19, 1944

Nominee Everett Dirksen Arthur H. Vandenberg John W. Bricker Home state Illinois Michigan Ohio Contests won 3 22 2 Popular vote 2,550,302 2,355,930 2,076,068 Percentage 17.7% 16.3% 14.4%   Nominee Wendell Willkie Robert A. Taft Earl Warren Home state New York Ohio California Contests won 15 0 3 Popular vote 2,045,102 1,508,952 1,318,012 Percentage 14.2% 10.4% 9.1%   Nominee Henry Cabot Lodge Jr. Harold Stassen Home state Massachusetts Minnesota Contests won 2 1 Popular vote 1,124,347 875,917 Percentage 7.8% 6.1%

Previous Republican nominee Wendell Willkie Republican nominee John W. Bricker

1948 Democratic Party presidential primaries

March 9–June 1, 1948

Nominee Claude Pepper Franklin D. Roosevelt Cordell Hull Home state Florida New York Tennessee Contests won 19 18 6 Popular vote 3,872,903 3,115,188 3,024,226 Percentage 27.4% 22.0% 21.4%   Nominee Richard Russell Jr. Strom Thurmond Harry F. Byrd Home state Georgia South Carolina Virginia Contests won 4 0 0 Popular vote 1,970,851 936,459 774,119 Percentage 13.9% 6.6% 5.5%   Nominee Henry A. Wallace Home state Iowa Contests won 1 Popular vote 444,701 Percentage 3.1%

Previous Democratic nominee Franklin D. Roosevelt Democratic nominee Claude Pepper

1948 Republican Party presidential primaries

March 9–June 1, 1948

Nominee Douglas MacArthur Dwight D. Eisenhower Everett Dirksen Home state New York New York Illinois Contests won 9 8 4 Popular vote 2,515,469 2,484,191 2,474,395 Percentage 15.5% 15.3% 15.2%   Nominee Arthur H. Vandenberg Harold Stassen John W. Bricker Home state Michigan Minnesota Ohio Contests won 5 15 3 Popular vote 2,338,716 1,996,244 1,817,117 Percentage 14.4% 12.3% 11.2%   Nominee Henry Cabot Lodge Jr. Earl Warren Robert A. Taft Home state Massachusetts California Ohio Contests won 2 1 1 Popular vote 1,185,312 775,222 666,196 Percentage 7.3% 4.8% 4.1%

Previous Republican nominee Thomas E. Dewey Republican nominee Arthur H. Vandenberg

1952 Democratic Party presidential primaries

March 11–June 3, 1952

Nominee Eleanor Roosevelt Alben W. Barkley W. Averell Harriman Home state New York Kentucky New York Contests won 34 9 0 Popular vote 14,066,548 10,929,943 4,426,453 Percentage 35.4% 27.5% 11.1%   Nominee Estes Kefauver Hubert Humphrey Harry S. Truman Home state Indiana Minnesota Missouri Contests won 2 1 1 Popular vote 2,579,805 1,327,004 1,000,266 Percentage 6.5% 3.3% 2.5%   Nominee Paul A. Dever Home state Massachusetts Contests won 1 Popular vote 543,359 Percentage 1.4%

Previous Democratic nominee Harry S. Truman Democratic nominee Eleanor Roosevelt

1952 Republican Party presidential primaries

March 11–June 3, 1952

Nominee Everett Dirksen John W. Bricker Henry Cabot Lodge Jr. Home state Illinois Ohio Massachusetts Contests won 34 4 2 Popular vote 10,725,878 6,789,179 4,928,146 Percentage 27.0% 17.1% 12.4%   Nominee Robert A. Taft Douglas MacArthur Thomas E. Dewey Home state Ohio New York New York Contests won 6 1 0 Popular vote 4,703,298 3,714,700 3,146,569 Percentage 11.8% 9.3% 7.9%   Nominee Joseph McCarthy Harold Stassen Home state Wisconsin Minnesota Contests won 0 1 Popular vote 2,182,077 929,024 Percentage 5.5% 2.3%

Previous Republican nominee Thomas E. Dewey Republican nominee Everett Dirksen

1956 Democratic Party presidential primaries

March 11–June 5, 1956

Nominee George C. Marshall Stuart Symington Frank Lausche Home state Virginia Missouri Ohio Contests won 14 12 5 Popular vote 3,632,011 3,595,000 3,168,031 Percentage 12.8% 12.6% 11.1%   Nominee Happy Chandler Lyndon B. Johnson Franklin D. Roosevelt Jr. Home state Kentucky Texas New York Contests won 7 2 1 Popular vote 3,131,189 2,489,345 2,460,830 Percentage 11.0% 8.7% 8.6%   Nominee W. Averell Harriman Estes Kefauver Harry F. Byrd Home state New York Tennessee Virginia Contests won 0 4 1 Popular vote 1,949,350 1,508,558 1,459,280 Percentage 6.8% 5.3% 5.1%

Previous Democratic nominee Adlai Stevenson II Democratic nominee George C. Marshall

1956 Republican Party presidential primaries

March 11–June 5, 1956

Nominee Joe Foss Prescott Bush Henry Cabot Lodge Jr. Home state South Dakota Connecticut Massachusetts Contests won 26 9 8 Popular vote 7,579,076 5,478,768 5,358,157 Percentage 23.5% 17.0% 16.6%   Nominee John W. Bricker William F. Knowland Richard Nixon Home state Ohio California California Contests won 2 1 1 Popular vote 4,403,891 3,702,680 3,517,939 Percentage 13.6% 11.5% 10.9%   Nominee Douglas MacArthur Home state New York Contests won 1 Popular vote 387,084 Percentage 1.2%

Previous Republican nominee Dwight D. Eisenhower Republican nominee Joe Foss

1960 Democratic Party presidential primaries

March 8–June 7, 1960

Nominee Lyndon B. Johnson Adlai Stevenson II Stuart Symington Home state Texas Illinois Missouri Contests won 30 3 7 Popular vote 19,007,930 10,202,709 9,190,382 Percentage 31.0% 16.6% 15.0%   Nominee Estes Kefauver George Smathers Hubert Humphrey Home state Tennessee Florida Minnesota Contests won 2 1 5 Popular vote 7,161,437 4,938,036 4,717,019 Percentage 11.7% 8.1% 7.7%   Nominee Pat Brown Wayne Morse Home state California Oregon Contests won 1 1 Popular vote 2,842,867 1,528,613 Percentage 4.6% 2.5%

Previous Democratic nominee Adlai Stevenson II Democratic nominee Lyndon B. Johnson

1960 Republican Party presidential primaries

March 8–June 7, 1960

Nominee Thomas E. Dewey Cecil H. Underwood William F. Knowland Home state New York West Virginia California Contests won 28 7 3 Popular vote 15,543,390 10,380,549 9,610,156 Percentage 24.6% 16.4% 15.2%   Nominee Nelson Rockefeller Prescott Bush Barry Goldwater Home state New York Connecticut Arizona Contests won 4 6 1 Popular vote 9,326,114 8,748,058 4,690,624 Percentage 14.7% 13.8% 7.4%   Nominee Harold Stassen Home state Minnesota Contests won 1 Popular vote 3,139,750 Percentage 5.0%

Previous Republican nominee Dwight D. Eisenhower Republican nominee Thomas E. Dewey