Maine Democrats Select Nominee July 25 to Challenge Sen. Collins in 2026
The outcome of a single-day party convention will determine which Democrat attempts to unseat one of the Senate's most durable incumbents in a state that has trended competitive at the federal level.
Maine Democrats are scheduled to convene on July 25, 2026, to select a nominee to replace state legislator Graham Platner, who had previously been positioned as a candidate in the race against Republican Sen. Susan Collins, according to reporting by The New York Times published July 15, 2026. The convention format means the nominee will be chosen by credentialed party delegates rather than through a primary election open to all registered Democrats.
Sen. Collins, a Republican first elected to the Senate in 1996, has won reelection four consecutive times, most recently in 2020 when she defeated Democratic challenger Sara Gideon by a margin of 51.0 percent to 42.4 percent, according to certified results from the Maine Secretary of State. The 2020 Gideon campaign raised approximately $69.6 million, one of the most expensive Senate races in Maine history, according to Federal Election Commission filings.
The names of the Democrats currently competing for the convention nomination were not specified in available source material as of publication. The New York Times reported that multiple candidates are vying for the slot, but their individual policy platforms, fundraising totals, and delegate support counts are not yet reflected in public FEC filings reviewed for this article.
Convention-based nominations in Maine are governed by state party rules and do not require a separate primary ballot. The selected nominee will face Collins, who has not yet filed a 2026 FEC campaign finance report publicly disclosing her current fundraising totals as of the July 15, 2026 publication date; that data would be contained in her next quarterly FEC filing.
Several facts remain unknown and are answerable through specific public records: the identities and current FEC fundraising totals of all declared Democratic candidates can be found in Q2 2026 FEC filings; delegate allocation counts are governed by Maine Democratic Party rules available through the state party; and Collins's current campaign cash on hand will be disclosed in her next FEC quarterly report.