This month's party support poll suggests that an election held now would see the National Coalition Party (NCP) emerge as the best-supported group in parliament with some 22.6 percent support.
That figure is an increase of 2.4 percentage points on last month's result.
The NCP and the opposition Social Democrats have swapped the top spot every month for the last four months.
The SDP recorded 22.3 percent support, while the Finns Party was at 17 percent.
The NCP seems to have drawn much of its growth from other government parties and those who were undecided in previous polls, according to Tuomo Turja of pollster Taloustutkimus.
"The National Coalition has gotten its core vote back, in the last poll a lot of them were recorded as 'don't knows'," said Turja. "The Finns Party lost more support than before to the NCP."
"The decline in Swedish People's Party support was also partly down to voters switching to the National Coalition," said Turja.
The SDP and NCP were the most popular parties throughout the polling period, with the border issues not playing a significant role in the poll.
The Social Democrats lost many supporters who are now undecided, but also some who switched to the Greens.
The Swedish People's Party, meanwhile, had poor results throughout the polling period.
Taloustutkimus interviewed 2,535 people between 1-28 November 2023. They were asked which party's candidates they would vote for if a parliamentary election were held now.
Just under 2,000 gave their party preference. The margin of error is +-1.8 percentage points.
Edited on 4 January 2024 to add search term content.
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