Isolated incidents were reported in California. The nonpartisan voting monitoring group California Common Cause said its volunteers received 2,000 calls to its voting hotline, many with questions about changes to polling places. In one unusual interruption in Bakersfield, a driver crashed into a elementary school and ran away, leading police to lock down the polling place. In North Hollywood and Canoga Park, a jammed ballot box and a broken voting machine led to problems. At the Los Angeles County registrar’s office in Norwalk, hundreds lined up for more than two hours to iron out registration issues, including new voter registrations.