Supreme Court Takes Up Mail-In Voting Debate — And Riverside County Has Its Own Election Fight

The U.S. Supreme Court will hear arguments today on a case that could reshape how mail-in ballots are handled across the country, with justices weighing whether states can legally count mail ballots that arrive after Election Day.

President Trump is pushing the court to tighten restrictions on the mail-in system. Voting rights groups, however, argue that states have broad flexibility in how they adopt and regulate mail-in voting. A final ruling is expected before summer.

The hearing lands at a complicated moment for election confidence locally. Riverside County Sheriff Chad Bianco announced last week that his department has launched an investigation into alleged voter fraud in the Proposition 50 special election, following claims from a group called the Riverside Election Integrity Team. The group alleges that more than 611,000 ballots were cast during the election, but more than 657,000 were actually counted, pointing to a roughly 46,000-ballot discrepancy.

County officials say the numbers reflect a misunderstanding of how votes are tallied, not actual fraud. California Attorney General Rob Bonta has twice requested that the investigation be halted.