Scott Detrow

For the third week in a row, former Vice President Joe Biden scored lopsided wins against the Vermont senator and extended a delegate lead that may be impossible for Sanders to surmount.

Ohio has suspended its primary election today, due to the coronavirus. But Arizona, Florida and Illinois residents vote on.

After not addressing news media or supporters on Tuesday night, Sen. Bernie Sanders offered a presidential campaign update on Wednesday afternoon. He plans to stay in the race.

In a press conference, the Vermont senator acknowledged calls for him to drop his bid for the Democratic presidential nomination but said he plans to debate former Vice President Joe Biden on Sunday.

Michigan is the biggest prize in Tuesday's Democratic presidential primaries. But for Sen. Bernie Sanders, who earned an upset win there in 2016, it also holds symbolic importance for his campaign.

Joe Biden is again the front-runner in the Democratic presidential race, with Bernie Sanders looking to regain the delegate lead Tuesday, as six more states vote.

The Democratic presidential race marches on this week. Six states vote on Tuesday, and the biggest delegate haul comes from Michigan.

Joe Biden's strong performance in Super Tuesday primary elections was the main storyline. So how does Bernie Sanders' campaign respond in the race for the Democratic presidential nomination?

Former New York Mayor Mike Bloomberg dropped his White House bid on Wednesday after a disappointing performance on Super Tuesday. He's backing former Vice President Joe Biden.

Bident won the majority of states, and performed better than expected in others. It was a stunning shift in momentum for a candidate who lost the first three contests of the Democratic primary.

In the Super Tuesday primary elections, polls have closed in Vermont, Virginia and North Carolina. Here are the latest results, and a reaction from the Bernie Sanders campaign.

Bernie Sanders has taken aim at Super Tuesday to extend his delegate lead and take firm hold of the front-runner position. But other elements of the Democratic party are coalescing around Joe Biden.

Bernie Sanders campaign didn't trust that the media would treat his presidential run seriously, so it started a livestream network — which has become a powerful fundraising and organizing tool.

In response, President Trump has said: "The Democrats are politicizing the coronavirus."

Democratic presidential candidates have been criss-crossing the nation, with South Carolina's primary tomorrow and the Super Tuesday elections just three days later.

The Sanders campaign has made its video livestreaming a central part of its overall messaging, fundraising and organizing strategy. Here's a look behind the scenes.

Sen. Bernie Sanders prevailed again on Saturday, according to The Associated Press. The state held the third contest in the nomination fight, but it was the first with a diverse population.

Nevada's caucuses take place Saturday, with Bernie Sanders expected to do well. Here's what the other Democratic presidential candidates — and President Trump — are hoping for.

Nevada is the first state in the west to hold its caucuses this week — it's also the first diverse state to do so. We'll look at what's on the line for the Democratic candidates in the Silver State.

Sanders won narrowly over former South Bend, Ind., Mayor Pete Buttigieg. And close behind them was Minnesota Sen. Amy Klobuchar, who had a late surge to get into the mix.