Michigan voters face an automatic constitutional convention question on the November 3, 2026 ballot, asking whether to convene delegates in 2027 for a potential full revision of the 1963 state constitution. Trader consensus heavily favors rejection at 96% implied probability for “No,” driven by consistent historical defeats—including a 67% “No” vote in 2010—and a broadening bipartisan opposition coalition that includes business groups, labor organizations, and figures across party lines. Concerns center on risks of special-interest influence, high costs, procedural uncertainty, and threats to recently enacted provisions such as reproductive rights and independent redistricting. A September 2026 poll showed 47% initial support but substantial undecided voters, consistent with patterns where opposition solidifies closer to election day. Late developments that could still shift odds include major polling swings, turnout surges among convention supporters, or unforeseen campaign events before November.