Massachusetts voters will decide Question 3 on November 3, 2026, which would replace separate party primaries for state offices with a single all-party primary where the top two candidates advance regardless of party affiliation. Both the Democratic and Republican state parties oppose the measure, citing risks of reduced party influence, greater donor sway, and potential general-election matchups that exclude one major party; a coalition of over two dozen lawmakers has endorsed a no vote. Supporters, including some moderate Democrats such as Representatives Seth Moulton and Jake Auchincloss plus former Governor Deval Patrick, argue it could boost turnout and competition by shifting key choices to higher-turnout periods. A June 2026 Supreme Judicial Court ruling cleared the initiative for the ballot after rejecting constitutional challenges. With nine questions on the ballot and limited public polling, trader sentiment reflects uncertainty over whether party-line resistance or reform arguments will prevail among independents and moderate voters in the final weeks.