The Two Options for Amending Michigan’s Constitution
Option 1: A Legislature-Referenced Constitutional Amendment
For a Legislative-Referred Constitutional Amendment to be placed on a Michigan ballot, joint resolutions in both House and Senate must be approved by supermajority. The amendment can be placed in the next regular election, such as November 2026, or on a later scheduled election. Citizens’ ballot approval will cause the amendment to become effective at time specified, as early as 45 days after approval by voters.
The House of Representatives has 110 members. Hence, a 2/3 (Super) Majority requires 74 votes
The Senate has 38 members. Hence, a 2/3 (Super) Majority requires 26 votes
(https://legislature.mi.gov/Laws/MCL?objectName=mcl-Article-XII-1)
Option 2: Amendment by petition and vote of electors.
Michigan’s Constitution allows citizens to place a proposed amendment on the statewide ballot through a petition process. To qualify for the November 2026 election, for example, supporters would have needed to collect 446,198 valid signatures, which equals 10% of the votes cast for governor in the most recent election.
Here’s how the process works:
- Draft the amendment text. Supporters write the proposed constitutional language and prepare petition forms that meet state formatting rules.
- Submit petition form for approval. The Board of State Canvassers reviews the petition’s form and summary before signatures can be collected.
- Collect signatures statewide. All signatures must be gathered within a 180‑day window. Campaigns typically collect more than the minimum to ensure enough valid signatures after state review.
- Submit signatures for verification. Petitions must be filed early enough for the Bureau of Elections and the Board of State Canvassers to review and certify them for the ballot.
- Ballot placement. Once certified, the amendment appears in a November ballot for voters to approve or reject.
(https://legislature.mi.gov/Laws/MCL?objectName=mcl-Article-XII-2)







