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.

Billionaire and climate change activist Tom Steyer is throwing his hat in the ring to become the next California governor, further crowding the pool of candidates seeking to lead the world's fourth-largest economy.

Potential 2028 Democratic contenders are escalating speculation of Republican attempts to undermine upcoming elections. The right calls it irresponsible "fearmongering."