WI SB509

17-year-olds would be permitted to vote in primary elections if they will turn 18 by the date of the subsequent general election

Amends multiple statutes including voter eligibility requirements, military elector lists, overseas elector definitions, and challenged elector oath language to incorporate the new age provision

Requires a statewide referendum at the November 2026 general election for voter approval before taking effect

If approved by majority vote at the referendum, the changes would take effect on January 1, 2027

Applies to all eligible 17-year-olds meeting standard voter qualifications including U.S. citizenship and 28-day residency requirements