There were four statewide ballot questions on the August 2026 ballot.
These ballot measures passed:
Missouri Constitutional Amendment 1 renews the 0.1% sales tax for state parks and soil/water conservation.
(Yes 82%; No 18%)
Missouri Constitutional Amendment 2 requires all charter counties (including Jackson County) to elect their county assessor
(Yes 77%; No 23%)
These ballot measures were defeated:
Missouri Constitutional Amendment 4 would have made citizen initiatives more difficult to pass by changing the approval standard from a statewide majority to a majority in each congressional district.
(Yes 20%; No 80%)
Missouri Constitutional Amendment 5 would have eliminated the state income tax and provided the legislature with broad powers to raise and broaden sales tax to offset lost revenue from eliminating the state income tax.
(Yes 17%; No 83%)
Missouri Voters Have a Superpower!: Check out the online version of "Missouri Voters Have a Superpower" to learn about special powers that Missouri voters have via the ballot initiative process.