Bernie Sanders

"This campaign is taking off and I believe we're going to do well from this point on," Biden told supporters in Philadelphia.

Many of his supporters say he should stay in the race—there are still over 1,000 delegates up for grabs and soon more progressive states like New York will have the opportunity to weigh in.

Exit polls showed that the Vermont senator's performance among younger voters was overshadowed by that of the former vice president's ability to win over older voters, who accounted for a larger slice of the overall electorate.

"Michigan is an important contest, not just for the Democratic primary, because the outcome of Michigan in November may determine who the next president of the United States is going to be," Biden said Monday.

"People should not have to miss a day of work to exercise their right to vote," Sanders said Tuesday. "This is an outrage."

Some Sanders supporters indicated on Twitter that they would not vote for Biden. Other users heavily criticized the #DemExit movement, saying they should vote for any Democrat to defeat Trump.

Second-choice polling from Morning Consult, released before Warren dropped out, didn't show either Sanders or Biden with a definitive advantage.

"We will continue to consult with public health officials and public health guidance and make announcements about future events in the coming days," a Biden campaign statement said.

The senator from Vermont and his surrogates have offered some clues as to who the progressive presidential hopeful could choose.

The state is crucial to Senator Bernie Sanders, who won defeated Hillary Clinton there in the 2016 primary.

A ninth poll conducted by YouGov put the former VP eight points ahead of his progressive challenger ahead of today's contests.

The former vice president would beat the incumbent by 7 percent in a hypothetical general election match-up, according to Morning Consult survey data.

Former Vice President Joe Biden's public stance on abortion rights has undergone a significant transformation.

The former vice president was asked by MSNBC's Lawrence O'Donnell about the Vermont senator's proposals for universal health care.

The liberal glitterati agree that political Job No. 1 is replacing President Donald Trump in November. What they can't agree on is with whom.

Biden leads Sanders by 91 delegates ahead of Tuesday's races, where 352 delegates—or roughly 9 percent of the total pledged delegates—are up for grabs.

Sanders' strong one-on-one match-ups with the president bode well for the White House hopeful ahead of primary elections in six more states on Tuesday.

Senator Bernie Sanders said that he doesn't "want to relive 2016" unlike former Secretary of State Hillary Clinton on Monday, after the crowd at a Fox News town hall event featuring Sanders booed a clip of Clinton saying "nobody likes" the senator.

Michigan Republican Mayor Michael Taylor said he's voting for Joe Biden because he "can appeal to moderates and Republicans like me who don't want to see four more years of President Trump."

A new poll by Quinnipiac University shows former Vice President Joe Biden leading Sen. Bernie Sanders, 54 percent to 35 percent nationally, although more respondents said Sanders was honest.

A new poll forecasts the upcoming Democratic primaries, with Bernie Sanders winning one state compared with Joe Biden's nine states.

This quiz may help you decide as the 2020 presidential race for Democrats has officially narrowed to just three candidates, with only two, Joe Biden and Bernie Sanders, in contention for the party nomination to face Donald Trump in November.

Adrian Hemond, a Michigan-based Democratic strategist, told Newsweek he thinks the Vermont senator "might be toast" in the state.

Pollsters found that both the former VP and the Vermont senator were within the margin of error of overtaking Trump in Pennsylvania.

Most recent national polls show the former vice president besting Trump by significant margins in a hypothetical general election match-up.

Civil rights activist Phillip Agnew said he took part in "misogynoirist culture" with 2009 comments about the former first lady.

The former vice president also recorded a 43-point lead among African American voters in the Michigan poll.

"It was hurtful to hear you talk about the reputations of two United States Senators who built their reputations and career on the segregation of race," Harris told Biden last year.

The Vermont senator and presidential candidate recalled the recent incident in which a man unfurled a Nazi flag at an event.

The Massachusetts senator dropped out of the Democratic presidential race on Thursday.