Bernie Sanders is a first choice for many Democratic activists, but if he's not one's top choice, he usually isn't considered an option.
Though Kamala Harris was the weekend's clear winner, candidates like Elizabeth Warren and Pete Buttigieg also found fans.
The 2020 candidate's plan focuses on executive actions that could happen with or without Congress getting on board.
As 20 Democratic contenders face off this week, here's a look at some stories from our archives that offer insight into the format.
The American left hasn't been this energetic in decades—and they're raising hard questions for almost every Democratic candidate.