Which body has the authority to amend the Missouri Constitution?

The Missouri Constitution can be amended through two primary methods: by the Missouri Legislature or through ballot measures initiated by the citizens. When the Legislature proposes an amendment, it must be passed by a simple majority in both chambers of the General Assembly and then submitted to the voters for approval. Alternatively, citizens can propose amendments through initiative petitions, which also require that the proposed amendment be voted on during a general election.

The authority to amend the Constitution lies with the collective actions of the Legislature or the direct democratic process involving the electorate, reflecting the principles of popular sovereignty and representative government that are foundational to Missouri's political system. This dual approach allows for both legislative input and direct citizen engagement in constitutional changes.

Other options, like the Governor acting alone, does not provide the necessary legislative or electoral support; the Supreme Court of Missouri interprets the Constitution rather than amends it; and local city councils do not possess the authority to amend the state Constitution, as their powers are limited to local governance issues.