Collins vs. Jackson: The Maine Senate Race

Graham Platner won the Democratic primary on June 9, 2026, and was set to face five-term incumbent Susan Collins, who is seeking a sixth term. In July 2026, Platner withdrew after a sexual-assault allegation, which he denied. Maine Democrats selected state Senate President Troy Jackson as the replacement nominee on July 25, 2026. Platner made a public reappearance at a veterans march on September 7, 2026, his first visible event since leaving the race, though the Maine Wire reported he failed to appear at an Ellsworth veterans march he had been scheduled to lead. The active general-election contest is now Collins versus Jackson.

A CNN/SSRS poll of 880 likely voters, fielded August 31 through September 6 and released September 9, 2026, showed Jackson at 48 percent and Collins at 45 percent, within the plus-or-minus 3.7-point margin of error. A Rasmussen Reports survey released September 11, 2026, described the race as a dead heat with Jackson holding a one-point edge. Both surveys place the contest inside or near the margin of error. No verified fundraising totals or major endorsement figures could be confirmed from the available sourced material this cycle.

The national environment is shaping the Maine race in measurable ways. The CNN poll released September 9 found that 67 percent of Maine likely voters disapprove of President Trump, against 31 percent who approve, and 45 percent named the economy and cost of living as their primary voting issue. Nationally, Trump's approval has tracked in the low-to-mid 30s across multiple surveys, with one Financial Times/Focaldata poll released September 6 placing it at 32 percent and showing only 17 percent approval on inflation handling. AAA reported national gasoline prices at roughly $4.14 to $4.15 per gallon over the Labor Day weekend, up approximately $1 from the same period in 2025, a figure that feeds directly into Maine cost-of-living concerns. Consumer prices were reported up 3.7 percent year over year in July by one survey summary. Collins benefits from a strong incumbency reputation, but the combination of elevated fuel costs, persistent inflation, and a deeply unpopular president in Maine is compressing her structural advantage.

Susan Collins was first elected in 1996 and is now seeking a sixth term, making her one of the longest-serving senators in Maine history. Troy Jackson, a Democrat who serves as president of the Maine state Senate, entered the race on July 25 after Platner's withdrawal. Jackson is still relatively unfamiliar to many statewide voters, a factor CNN noted in its September 9 coverage. Fox News reported that Jackson had suggested the government could play a role in property acquisition in a manner his critics have likened to land-grab policy, a line of attack Republicans have begun using against him. The race is widely tracked as one of the most competitive Senate contests of the 2026 cycle, alongside Michigan, and is seen as a potential factor in which party controls the Senate after November.