The Latest: Polls open for races across the US as a busy primary election day gets underway

For a state that’s home to Hollywood, there isn’t much star power in California’s gubernatorial race. It’s a somewhat different story in Los Angeles, where a reality television personality is running for mayor as the city prepares to host the Olympics.

More primaries are being held on Tuesday as well. Democrats are banking on a rare chance to regain ground in Iowa, a rural state that has repeatedly eluded them in recent years. Republicans, meanwhile, are grappling with a New Jersey congressman whose unexplained absence could put their already slim majority at risk.

— California: Voters are weighing in on who should lead the nation’s most populous state, where there is no clear leader among candidates vying to advance in the race to succeed Democratic Gov. Gavin Newsom. Plus, U.S. House races are on the ballot, along with the Los Angeles mayor’s race.

— New Mexico: Contests in the state include primaries for congressional seats, a U.S. Senate seat and a long list of ...