Senator Susan Collins, a Republican, finds herself in a closely contested race in Maine against Democrat Troy Jackson. Despite the state’s general Democratic leanings, Collins remains neck and neck with Jackson. She manages to secure support from some Democrats and focuses on state issues over national politics to maintain a tie.

Collins has an advantage regarding her ability to bring federal funds to Maine. However, Jackson faces the challenge of Collins attracting one in five voters who disapprove of Trump, exceeding the national average for Republican congressional candidates.

Jackson’s support is fueled by voters who see Collins aligning too closely with President Trump or are opposed to tariffs. Those wanting national Democrats to control the Senate and prioritizing change support Jackson as well. About 10% of voters are still undecided, indicating the race remains fluid.

Although many voters believe Jackson’s policies would improve their financial situation, Collins collects nearly one in five of these voters too. While most Mainers feel Trump’s policies have harmed the state economy, and Jackson gains significant support from these voters, Collins’s long service still appeals to many.

Despite this being perceived as an ‘anti-incumbent’ year, Collins performs well among those who have consistently supported her in the past. Jackson seems affected by the primary season, with four in 10 Democrats and a majority of independents preferring a different candidate. He also trails the Democratic gubernatorial nominee, Hannah Pingree, whose race better aligns with the state’s partisan tendencies.

This information comes from a CBS News/YouGov survey of 1,114 registered voters in Maine, conducted between September 23 and October 1, 2026. The survey used U.S. Census data for weighting and has a margin of error of ± 4.7 points for registered voters.