Biden wins most Super Tuesday states; Sanders takes California

Joe Biden took most of the states voting yesterday for a Democratic candidate to challenge President Trump, including an unexpected win in Texas. Rival Bernie Sanders, however, overwhelmed Biden in California to grab the night's biggest haul of delegates. The results confirm the scale of Biden's comeback, which kicked off with a big win last week in South Carolina, and suggest a two-man slog for the job.

For his $500m+ investment, billionaire Mike Bloomberg won a single race -- American Samoa -- and indicated that his vanity campaign might soon be over. Elizabeth Warren could only manage third place in Massachussets, trailing across the map.

With many close races, Biden and Sanders nonetheless split the haul between them. According to the BBC, with several races yet to declare, Biden has 453 convention delegates, Sanders 382, Warren 50 and Bloomberg 44.