Amendment 84: Mail Ballot Voter Identification
Amendment 84 on Colorado's November 3, 2026 ballot (a statewide measure). Passes with at least 55 percent of votes cast. Plain-language summary of what YES and NO mean, with sources.
For federal and statewide elections, voters would have to write the last four digits of their Social Security number, or of their Colorado driver's license or ID card number, on their mail ballot in addition to signing it. If the information is missing or doesn't match, voters could fix it within eight days after Election Day, including with other forms of ID; otherwise the ballot would not be counted. A YES vote: Voters must provide identification information with their mail ballot, in addition to their signature. A NO vote: The current signature-only verification system for mail ballots continues. It passes with at least 55 percent of votes cast. This explanation was prepared with AI assistance and compared with the official Blue Book by an automated process; no person has signed off on it. Confirm details with the official sources.