Motorists drop off their ballots at the Registrar of Voters on primary election day June 5, 2018 in San Diego. Eight states, including California, hold primary elections on Tuesday and there are several highly competitive races, including those for governor and U.S. House and Senate seats.

Motorists drop off their ballots at the Registrar of Voters on primary election day June 5, 2018 in San Diego. Eight states, including California, hold primary elections on Tuesday and there are several highly competitive races, including those for governor and U.S. House and Senate seats.