In recent years, voting by mail has been the subject of numerous lawsuits and attacks that often claim the process gives Democratic nominees and legislative bills an edge. But a recent Caltech study shows that sending ballots to all registered voters boosts turnout for both major parties. Co-authors R. Michael Alvarez , Caltech's Flintridge Foundation Professor of Political and Computational Social Science and co-director of the Caltech/MIT Voting Technology Project , and Yimeng Li (PhD '22), a