View the constitution’s amendments by year of adoption and historical context for significant amendments.
The Wisconsin Constitution & Its Amendments
In 1848, voters in the Wisconsin Territory ratified the Wisconsin Constitution. The original copy of the Constitution, a handwritten document drafted by the delegates at the 1847 constitutional convention, is missing.
The Constitution ratified in 1848 is still in use today. However, it has also been amended nearly 150 times.
To amend the Constitution, legislators in two successive legislative sessions must vote, by a majority in both houses, to pass the amendment and present the amendment to voters. Wisconsin voters then have the opportunity to ratify or reject the proposed amendment.