evidence: Biden's pick Kamala Harris has Democrats' support. What happens next? President Joe Biden has dropped out of the US election race and announced his support for Vice-President Kamala Harris as the Democratic Party's nominee. [...] - LIVE: Latest updates as Joe Biden drops out of US presidential election race - WATCH: How Joe Biden's bid for re-election came to an end - IN FULL: Biden's letter announcing his withdrawal - PROFILE: Kamala Harris, the VP who Biden is backing for president - ANALYSIS: What Biden quitting means for Harris, the Democrats and Trump