Billionaire former mayor of NYC has spent more than $417 million of his own money so far on advertising nationwide; rivals urge him to compete on debate stage

De Blasio says 'I am standing with Bernie because he stands with working families, and always has... Bernie is the candidate to take Trump on and take him down'

Candidates lambaste billionaire rival for trying to buy his way into White House, raise questions about his commitment to racial equality

Ted Deutch signs on with former NYC mayor due to shared stance on gun control, will do outreach to Jewish voters

After Trump calls Democratic presidential hopeful a '5'4" mass of dead energy,' former NYC mayor fires back, but how tall is he really?

Revelation of Democrat candidate's support for 'redlining' comes amid controversy over his record on racial discrimination as New York mayor

Democratic socialist and billionaire ex-mayor of New York are both serious contenders to be first-ever Jewish presidential nominee, something seen as unrealistic only a decade ago

Democrats' Iowa frontrunners Sanders and Buttigieg look to cement their momentum in nation's first primary

5 residents of Dixville Notch cast ballots just after midnight; Bloomberg gets 3 votes, one from a Republican and 2 Democrats; remaining 2 votes go to Buttigieg, Sanders

US presidential hopeful's campaign spot will feature bereaved mother calling the situation a 'national crisis'; Trump intends to reveal his own ad later this week