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Troy Jackson Becomes Presumptive Democratic Nominee in Maine Senate Race

His fast delegate sweep leaves him likely to face Sen. Susan Collins and forces Democrats onto a short general‑election clock that will test fundraising, unity and vetting.

Senator Susan Collins has struggled to pull ahead of Democratic candidates in the race for her seat. (Photo by Anna Moneymaker/Getty Images)
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From left foreground, Michigan state Rep. Donavan McKinney, D-Detroit, U.S. Rep. Alexandria Ocasio-Cortez, D-N.Y., Michigan Democratic U.S. Senate primary candidate Abdul El-Sayed, U.S. Sen. Bernie Sanders, I-VT., United Auto Workers President Shawn Fain, and U.S. Rep. Rashida Tlaib, D-Mich. join hands together following a campaign rally for El-Sayed, Saturday, July 18, 2026, in Detroit. (AP Photo/Jose Juarez)
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Overview

  • Jackson secured overwhelming support in county caucuses over the weekend, winning at least 456 of the 601 delegate and state‑committee slots that will choose the nominee at the July 25 convention.
  • The Maine Democratic Party certified three candidates for the July 25 ballot — Jackson, David Costello and Saundra Pelletier — but several rivals dropped out after Jackson’s delegate slate prevailed.
  • Jackson’s campaign reported roughly $1 million raised since his launch, with more than half collected in the days after he emerged as the presumptive nominee.
  • A University of New Hampshire poll shows Jackson narrowly ahead of incumbent Sen. Susan Collins in a hypothetical matchup, but recent reports of Jackson’s past angry outbursts and questions about rushed vetting have increased scrutiny.
  • The party must formally name and file a replacement by July 27, leaving little time to build statewide operations, unify Platner supporters and persuade national backers that the nominee can beat Collins this fall.