 Joe Biden is our nominee. We beat Trump once and we're going to beat him again, period. Harris has been on the road raising money and rallying with supporters in the past few days. Newsom, for his part, was in the spin room after the debate last Thursday and has been consistently fundraising for Biden. Whitmer, one of the Biden campaign's co-chairs, has been providing critical support to Biden in her swing state of Michigan. But most of the governors haven't had the time they'd need to build a national profile where they could beat Trump.