Coronavirus looms over Democratic primaries as voters stay home
- Outbreak prompts Ohio to postpone contest, shows signs of hurting Tuesday’s turnout in Arizona, Florida and Illinois
- Bernie Sanders could face renewed pressure to drop presidential bid if he loses badly to Joe Biden

Voters in three states were met by gloved poll workers and hand sanitiser dispensers as they cast ballots under the threat of the coronavirus on Tuesday, with Joe Biden looking to bolster his lead in the Democratic US presidential race.
The former vice-president hopes big victories in nominating contests in Arizona, Florida and Illinois can help him amass an unassailable advantage over rival Bernie Sanders in the race to choose a challenger to Republican President Donald Trump in the November 3 election.
Biden leads Sanders, a US senator from Vermont, in opinion polls in all three states.
Ohio also had been expected to vote on Tuesday, but Governor Mike DeWine said public health concerns made in-person voting too dangerous and postponed the vote to June 2.

“Our goal is that no one will have to choose between their constitutional rights and risking their health,” DeWine told a news conference on Tuesday, adding that going ahead with the vote would have been “a real, real disaster”.