Trump faces a tighter race with Kamala Harris set to replace Biden, experts say CNBCUS election live updates: top Democrats back Kamala Harris as donations surge after Biden steps aside The Guardian USElection 2024 live updates: Democrats start to rally around Harris after Biden’s exit The Washington PostSome key battleground Dems conspicuously quiet about Kamala Harris on Sunday POLITICOVideo: Rep. Clyburn explains why he plans to endorse Harris CNN