Running largely unopposed, Trump also wraps up Republican nomination; Polls shuttered in Ohio over virus fears

After five candidates drop out, the two men are the last to make the case they are best-positioned to challenge Trump as rising infections wreak havoc

Democratic front-runner says he'd rely more on science, global alliances; Sanders blasts administration's 'incompetence and recklessness'

Conceding he trails far behind Biden for nomination, Vermont senator says 'while our campaign has won the ideological debate, we are losing the debate over electability'

Imam Sayed Hassan Al-Qazwini denounced anti-Anti-Semitism in speech, but said in 2015 that the Islamic State terrorist group 'somehow is connected to Israel'

Former vice presidents racks up three largest states in Tuesday voting, though Vermont senator still hoping for turnaround in remaining contests, vows not to drop out

Candidate's lone primary victory in American Samoa, beating even local-born Tulsi Gabbard, was an unorthodox and inauspicious culmination to a much-hyped but short-lived campaign

Progressive US senator has been outperformed by Bernie Sanders, had poor showing this week that included losing her home state of Massachusetts

Former NYC mayor who spent hundreds of millions on unprecedented ad campaign quits after dismal showing in primaries, as race effectively whittled down to Biden versus Sanders

Move comes after billionaire spent unprecedented sums of money in TV ads that got him nowhere on Super Tuesday, though he is still buying new ads and scheduling campaign events