Massachusetts voters face Question 3 on November 3, 2026, which would replace separate party primaries with a single all-party primary where the top two vote-getters advance to the general election for most state and federal offices starting in 2028. Trader sentiment remains closely balanced near even odds due to divided Democratic support—moderates including Representatives Auchincloss and Moulton back the change for broader appeal and competitiveness in a state with roughly 65 percent unenrolled voters, while party leaders, progressives, and unions oppose it over concerns about donor influence, reduced party control, and ballot access. The measure cleared a Supreme Judicial Court challenge in June after signature certification, joining similar systems in California and Washington, yet faces headwinds from nine simultaneous ballot questions that could fragment attention. Late endorsements, campaign spending, and turnout patterns among independents could shift probabilities ahead of Election Day.