With the Missouri Supreme Court denying an appeal of two lower court rulings, a constitutional amendment reinstating campaign contribution limits will appear on the November ballot. State contribution limits, originally approved by voters in 1994, were repealed by the General Assembly in 2008.

If passed, the 2016 ballot measure would ban direct corporate and labor union contributions and limit individual and committee contributions to statewide candidates to $2,600 per election. Contributions to political parties would be capped at $25,000 per election.