US Democrats turn to Nevada to clarify a chaotic campaign

The muddled race to secure the Democratic nomination for US president enters a new phase this weekend as voters in the western state of Nevada gather to show their preference for one of the seven candidates still in the race.

With two contests behind them, the candidates fanned out across the state ahead of the vote in an effort to convince caucus-goers that they were best suited to take on President Donald Trump in the November general election.