Eight candidates vying to become California’s next governor gathered Tuesday at Pomona College in Claremont for a debate that was as much a test of scrappy stamina as it was of policy, with contenders in the crowded field fighting for airtime while attempting to address the state’s deepening affordability crisis.

Billionaire climate activist and former presidential candidate Tom Steyer has won a key union endorsement that helps solidify his position as the party’s leading contender for California governor. This follows the dramatic collapse of former Rep. Eric Swalwell’s campaign and his resignation from Congress Tuesday amid additional allegations of sexual assault.