Wisconsin voters have officially added the state's voter ID law to the state constitution. The Associated Press called the race at 9:48 p.m. EST on Tuesday.
The state already required voters to show photo ID at the polls. Now, that requirement is part of the constitution.
The Republican-controlled legislature placed the measure on the ballot. Lawmakers said it was meant to strengthen election security.
The change also makes it harder for Democrats to overturn the law in court. Constitutional amendments must pass two legislative sessions and a statewide vote.
GOP lawmakers, Donald Trump, and Elon Musk all celebrated the win.
"This will help maintain integrity in the electoral process, no matter who controls the Legislature," said Republican State Sen. Van Wanggaard, who co-authored the amendment.
Trump praised the result on Truth Social: "VOTER I.D. JUST APPROVED IN WISCONSIN ELECTION. Democrats fought hard against this, presumably so they can CHEAT. This is a BIG WIN FOR REPUBLICANS, MAYBE THE BIGGEST WIN OF THE NIGHT. IT SHOULD ALLOW US TO WIN WISCONSIN, LIKE I JUST DID IN THE PRESIDENTIAL ELECTION, FOR MANY YEARS TO COME!"
Musk kept it brief, posting "Yeah!" on X along with The AP's announcement.
Opponents argued that voter ID laws make it harder for marginalized groups to vote. They say the law disproportionately affects people of color, low-income voters, and the disabled.
According to the National Conference of State Legislatures, Wisconsin’s voter ID rules are the strictest in the country.
In total, 36 states have laws that either require or request some form of voter identification.