Wisconsin voters on Tuesday approved a constitutional amendment to enshrine the state's voter ID law in the Constitution.

No, New Jersey does not require voters to show ID during elections. The state verifies voters' identities when they first register to vote. During registration, New Jersey residents must provide either their date of birth and Social Security number, or their New Jersey-issued ID card or driver's license.

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.