Candidates running to replace Gov. Gavin Newsom (D-CA) zeroed in on Xavier Becerra during Tuesday night’s debate, the latest indication that the former Health and Human Services secretary may be the one to beat.

During the two-hour CNN debate, Becerra took hits from both Republicans and the four other Democrats onstage about everything from handling immigrant minors during his time at HHS to his evolving stance on single-payer healthcare, ties to Big Oil, and a campaign finance scandal involving a former aide.