Biden has personally signed off on a more aggressive posture and has has been studying dossiers about Harris’ record as a prosecutor and California Attorney General, advisers say

Trump's attacks leave the candidates with a difficult choice: should they their time to make a moral case against Trump, or a case for themselves?

Julián Castro has been a rising star in the Democratic Party since at least 2012, but it took him until Wednesday' night's presidential primary debate to finally catch the spotlight. Since launching his campaign, the...

"Candidates jump in once it is elevated," one staffer to a top-tier Democratic presidential candidate says.

Joe Biden may be the frontrunner for the Democratic primary, but progressive Democrats are locked in a shadow primary of their own: in the next year, they'll have to decide whether Bernie Sanders or Elizabeth...

Pete Buttigieg typically campaigns in shirtsleeves. But on Tuesday, the mayor of South Bend, Ind., wore a jacket and tie. The change in wardrobe signaled a dramatic shift in approach, as the Democratic presidential candidate...