A crowded Democratic primary on September 9 features incumbent Sabina Matos against four challengers including Xaykham Khamsyvoravong, Sue AnderBois, Cynthia Armour Coyne, and Ross McCurdy, producing a fragmented field that sustains tight trader probabilities. Late August polls showed no candidate exceeding 22 percent support amid substantial undecided voters, while Khamsyvoravong secured notable endorsements from U.S. Representative Gabe Amo and Attorney General Peter Neronha alongside stronger early fundraising. Matos retains backing from labor unions and some municipal groups, yet the absence of a dominant frontrunner or decisive late momentum has prevented separation in market pricing ahead of the vote.