Republican incumbent Susan Collins is trailing Democratic challenger Troy Jackson by two percentage points in Maine's U.S. Senate race, according to a Fox News poll released Wednesday. The survey indicates that 55% of Maine voters are concerned about Collins' voting record aligning too often with President Donald Trump, while 43% are worried about Jackson's progressive alignment with the Democratic Socialist movement.

The poll found Jackson leading Collins 48-46%, a margin within the survey's sampling error. This represents a slight shift from June, when Collins held a three-point lead over Jackson's predecessor, Graham Platner. Collins' support has decreased by four points since then, while Jackson has gained one point over Platner's previous standing.

Among voters who are most certain to vote, Jackson's lead widens to four points. The poll also suggests that one in five Jackson supporters may change their minds before the election, while a majority of Collins' backers report their choice is locked in.

Collins, who has represented Maine since 1997, faces concerns about her ties to Trump, who lost Maine in 2020. Trump's personal favorable rating in Maine is underwater by 20 points. Jackson, a former president of the Maine Senate, replaced Platner as the Democratic nominee in July. His candidacy appears to be shifting the race towards a referendum on Collins.

Sixty-one percent of Jackson's supporters stated their vote is primarily against Collins, an increase from 48% when Platner was the opponent. Conversely, only 36% said they were voting for Jackson, down from Platner's 50%. For Collins, 71% of her supporters report voting mainly for her, up from 53% in June, while only 27% are voting against Jackson, down from 45% when Platner was the nominee.

The poll highlights inflation as the top issue influencing Maine voters' Senate choices, with one-third citing it as most important. Other key issues include immigration, border security, and healthcare.

Collins' unfavorable ratings stand at 54% versus 44% favorable, a more negative standing than in June. Jackson's favorable rating is a single point positive at 47% favorable to 46% unfavorable. Voters who hold negative opinions of both candidates marginally prefer Jackson.

The poll surveyed 1,000 Maine registered voters between August 6-10, 2026. It was conducted by Beacon Research (D) and Shaw & Company Research (R). The margin of sampling error for the full sample is plus or minus 3 percentage points.