Mass voter challenges are likely to occur in the 2026 midterm elections, the Brennan Center for Justice warned Tuesday, with the potential to “undermine the democratic process.” They may not understand their options for verifying their identity,” said the report by Brennan Center Counsel Andrew Garber. Garber found that “mass voter challenges have become a key element in the campaign to use election integrity as a pretext for voter suppression.” In 2024, Brennan’s research found that private citizens filed at least 185,232 voter challenges in the states studied. It asked for any documents involving voter challenges in 2024 and how officials dealt with those challenges.