Ballots cast to approve Prop. 50 outnumbered "no" votes in Fresno, Imperial, Lake, Merced, Riverside, San Bernardino and San Joaquin counties, each of which were carried by Mr. Trump in the last presidential election.
The race for California governor features former presidential wannabes, a county sheriff, two women who could become the first female to hold the office, current and former House members and at least one billionaire.
The federal agency that oversees the security of election systems was largely absent from planning before elections this month in several states