Republican Maine Sen. Susan Collins’ approval rating has fallen amid a tense summer session where she repeatedly broke away from her party and President Donald Trump on multiple crucial votes.
The results were released by Morning Consult as a part of its quarterly poll of senators’ approval ratings, and it shows the favorability of the longtime Maine senator, 72, to be in a downward trend. The moderate Republican has said she intends to run for reelection in 2026. (RELATED: Why 3 Republican Senators Voted Against Trump’s Megabill)
WASHINGTON, DC – JULY 09: Senate Appropriations Committee Chair Susan Collins (R-ME) makes remarks at the opening of a hearing held to examine a future without Type 1 Diabetes with a focus on accelerating breakthroughs and creating hope at the Dirksen Senate Office Building on July 09, 2025 in Washington, DC. (Photo by Jemal Countess/Getty Images for Breakthrough T1D)
A total of 54% of Mainers disapprove of Collins’ job performance, marking a high point for her disapproval in the Morning Consult survey’s eight-year history. Only 38% of voters in the Pine Tree State approve of the senator’s performance in office.
The Morning Consult survey from the fourth quarter of 2024 by contrast shows that 47% of Collins’ constituents approved of the senator and 44% disapproved. This marked a slight decline from the third quarter of 2024 when 50% of Collins’ constituents approved of her job performance and 42% disapproved, according to the Morning Consult’s poll at the time.
A Collins spokesperson pointed to higher approval ratings in a Pan Atlantic Research poll when reached by the Daily Caller News Foundation. The poll was conducted in mid-May and surveyed 840 likely Maine voters, finding 49% of respondents viewed her favorably, while only 45% viewed her unfavorably.
The decline of Collins’ approval ratings in the Morning Consult survey comes after she opposed Trump on key elements of his agenda.
I strongly support extending the tax relief for families and small businesses. My vote against this bill stems primarily from the harmful impact it will have on Medicaid, affecting low-income families and rural health care providers like our hospitals and nursing homes.
— Sen. Susan Collins (@SenatorCollins) July 1, 2025
Collins was one of three GOP senators to vote “no” on Trump’s “one big, beautiful” bill which the president signed into law on July 4 — after the Morning Consult survey was conducted — citing concerns over the bill’s Medicaid reforms. Amid the series of votes leading up to the final vote to pass the bill, Collins sponsored a measure to raise taxes on millionaires in an effort to boost the funding for rural hospitals. The amendment would have applied to those making over $25 million a year, or couples who have over $50 million in combined income.
The White House is reportedly having discussions about replacements for Collins should she decline to seek reelection — although she currently does not face any well-known primary challengers. Collins, the chair of the powerful Senate Appropriations Committee, has yet to announce a formal reelection campaign, but said Tuesday she is planning to run in 2026 and is encouraged by her strong fundraising results.
Collins waited to announce her successful 2020 reelection bid until December 2019. The National Republican Senatorial Committee (NRSC) is already running ads for Collins, and a super PAC backing her has raised $5.6 million in the first half of the year. Collins currently has $5 million in cash on hand and has raised a total of $6 million according to the Federal Election Commission (FEC).
The senator’s stocked war chest positions her well in a general election in Democratic-leaning Maine. Collins won her most recent reelection bid in 2020 against Democrat Sara Gideon by 9 percentage points — despite Joe Biden winning the state by the same margin. Maine is currently the only state which voted for failed Democratic nominee Kamala Harris in 2024 and has a Republican senator.
Jason Savage, Executive Director of Maine GOP, told the DCNF Collins has been doing a “tremendous job” and said her work has touched every community throughout the state— something voters won’t forget when it comes to the 2026 midterms.
“There’s generally broad support within our committee and elected officials here,” Savage said of Collins’ approval in Maine. “I think a lot of it gets blown out of proportion in the national press.”
Savage said part of Collins’ allure to voters across Maine is her capability to be upfront about the politics of Washington. Her willingness to explain the reasoning behind her votes as well, as the policy behind them, drives her reputation of accessibility.
“If Gideon or [Independent Maine Sen. Angus] King aren’t answering the phones, voters know that Collins will,” Savage said.
Currently declared Democratic Senate candidates in Maine include David Costello, the party’s 2024 Senate nominee who served as acting secretary of Maryland’s Department of the Environment, and Jordan Wood who was the chief of staff to former Democratic California Rep. Katie Porter.
GOP Sens. Mitch McConnell of Kentucky, Ron Johnson of Wisconsin and Joni Ernst of Iowa were the only other Republicans to receive negative approval ratings in the Morning Consult quarterly poll.
The Morning Consult tracker was conducted on a rolling basis between April and June. Margins of error among registered voters vary by state, from as low as +/-6 percentage points in less populous states such as Wyoming to +/-1 point in more populous states such as California.
Editor’s Note: This story has been updated to reflect the methodology of the Morning Consult poll and to clarify the reported White House discussions.
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