From 2006 through 2022, a total of 1,139 constitutional amendments were proposed and put before voters. Of this total, voters approved 819 proposed changes to state constitutions. Every state but Delaware requires voters to ratify proposed state constitutional amendments.
There are four ways that proposed constitutional amendments can be proposed and put on the ballot in most states:
- Through legislatively referred constitutional amendments.
- Through initiated constitutional amendments put on the ballot through a citizen signature petition. Eighteen states allow this method of amendment.
- Through constitutional conventions. In some states, automatic ballot referrals allow voters to decide at regular intervals whether to hold a convention.
- In Florida, there is a commission-referred amendment process.
