Medicaid Monitor
Policy Intelligence
Medicaid Monitor
Policy Intelligence
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State Policy·MO·August 10, 2026

Missouri Voters Reject GOP Tax Amendment and Constitutional Change Measure in August Primary

Missouri voters on August 6, 2026 defeated Amendment 5, a Republican-backed tax overhaul supported by $23 million in outside funding, by 67 percentage points, losing in every county. The same electorate approved Amendment 1, renewing a sales tax for state parks, with 82% support, and rejected Amendment 4, which would have required constitutional amendments to pass in every congressional district, with less than 20% voting yes. The results suggest Missouri voters can distinguish between ballot measures despite concerns from state officials about out-of-state influence and voter confusion.

Why it matters

The ballot results signal that Missouri voters may resist future constitutional amendments affecting Medicaid expansion or program structure, even with heavy campaign spending, while remaining open to measures with clear, tangible benefits.

Read the full article at missouriindependent.com

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