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

Primary elections are underway across the US, with key races in California, New Mexico, and New Jersey. California voters are choosing a gubernatorial candidate without a clear leader, while New Mexico's governor's race includes former Interior Secretary Deb Haaland. New Jersey voters are selecting a Democratic challenger for Rep. Tom Kean Jr., who has faced scrutiny for missing over 100 House votes due to an undisclosed medical issue.