Source: Election results are from The Associated Press. By The New York Times election results team: Michael Andre, Emma Baker, Neil Berg, Andrew Chavez, Michael Beswetherick, Matthew Bloch, Lily Boyce,

Wisconsin is one of nine states where people must present photo ID to vote, and its requirement is the nation’s strictest, according to the National Conference of State Legislatures. Thirty-six states have laws requiring or requesting that voters show some sort of identification, according to the NCSL.

While Wisconsin's voter ID law has been in effect since 2016, putting it in the constitution makes it harder for a court to strike down in the future.

Both contests have sharp partisan divisions, though they have drawn far less spending and national attention than the race for control of the Supreme Court.