After a primary night in which Vermont Sen. Bernie Sanders lost every state contest, his campaign manager issues statement, saying he’ll be assessing his campaign.

Bernie Sanders strengthens his strategy for approaching mini Super Tuesday and how important a Michigan win is for his chances of competing with Joe Biden.

The dispute kicked off when Flavor Flav sent a cease-and-desist to Sanders.

A newly revealed letter highlights Democratic presidential candidate Bernie Sanders' complicated record on guns that's at odds with many Democrats.

Sanders called the nation’s child care and early education an "embarrassment.”

Sanders said he won't attend AIPAC event, calling it a "platform for bigotry."

U.S. intelligence officials briefed the presidential hopeful last month, he said.

New York City Mayor Bill de Blasio is endorsing Bernie Sanders for president.

The presidential candidate talks Iowa chaos, New Hampshire primary and Democratic field.

Ahead of the New Hampshire primary, former Hillary Clinton aide Brian Fallon told "Powerhouse Politics" he's "intrigued" by Sen. Bernie Sanders' campaign strategy.

Sen. Bernie Sanders, who ran in 2016 as a Democrat, is one of the most well-known presidential candidates in a field with relatively lower-profile candidates.

Senator Bernie Sanders is hoping new voters offer his campaign a big surprise at the Iowa caucuses.

Sanders' campaign is showing signs of strength heading into the Iowa caucuses.

Former RNC spokesperson Tim Miller shares similarities between Bernie Sanders in the 2020 presidential race and President Donald Trump in the 2016 race.

Hillary Clinton would not pledge to support Bernie Sanders if he won the Democratic nomination.

Clinton's comments come as Sanders is among the front-runners in the Dem race.

Sen. Bernie Sanders and Sen. Elizabeth Warren are jockeying for support from the progressive wing of the Democratic Party.

A new Des Moines Register poll shows Bernie Sanders in the lead but with three weeks before the caucuses the tight race is still up for grabs.

He faces the challenge of earning a repeat victory in the New Hampshire primary.

Sen. Bernie Sanders is currently in "good health" nearly three months after he suffered a heart attack, doctors wrote in letters released by his campaign.

Sen. Bernie Sanders is currently in "good health" nearly three months after he suffered a heart attack, doctors wrote in letters released by his campaign.

FiveThirtyEight's Nate Silver looks into Bernie Sanders' chances of winning the Democratic nomination on "This Week."

The Naval Air Force veteran said he was buried in medical debt at a Bernie Sanders campaign event in September.

A Sen. Bernie Sanders’ presidential campaign hire is no longer with his staff after a series of decade-old vulgar tweets were reported.

Bernie Sanders is promising to invest $150 billion to bring high-speed internet to “every household in America” while breaking up and better regulating monopolies he says currently limit access to drive up their profits

Sanders has remained among the front-runners despite his heart attack.

Sanders leads Elizabeth Warren by 3 points in the key primary state.

Democratic presidential candidate Bernie Sanders is planning to release his health records by the end of the year

Sanders is the oldest candidate in the race, but picked up an endorsement from youngest woman in Congress: Alexandria Ocasio-Cortez.

Sen. Bernie Sanders returned to the campaign trail Saturday with a rally in New York City, supported by Rep. Alexandria Ocasio-Cortez.

Sen. Bernie Sanders' campaign announced Tuesday night that Rep. Alexandria Ocasio-Cortez plans to endorse Sanders' presidential campaign.

With Sen. Elizabeth Warren climbing in polls, Sen. Bernie Sanders highlighted a key difference in their core economic philosophies in an interview on ABC's "This Week."

Campaign surrogate Nina Turner told ABC News' "Powerhouse Politics" hosts that Bernie Sanders will continue campaigning, despite last week's heart attack.

Bernie Sanders got candid about the toll of the campaign trail and admits he should've paid more attention to the signs his body was giving him.

The 2020 Democratic presidential candidate said he was "dumb" for not listening to his body ahead of his heart attack, and vowed to continue on the campaign trail.

The senator made the statement while going for a walk with his wife Jane.

After suffering a heart attack and two stents implanted, Sanders has returned home and says he will be in the next Democratic debate.

It was a struggle to keep up with Sen. Bernie Sanders during the 2016 presidential primary.

The senator was hospitalized after a heart procedure to clear a clogged artery, but his campaign promises he will be on the debate stage in less than two weeks.

Bernie Sanders, hospitalized on Tuesday, had a heart attack, his doctor confirmed.

Jane Sanders deferred to health professionals on his status but said the 78-year-old Democratic presidential candidate “looks more energetic than he has been.”

Presidential candidate Sen. Bernie Sanders underwent emergency heart surgery after he experienced chest pain at a campaign event Tuesday.

Sen. Bernie Sanders, 78, was hospitalized Tuesday night in Las Vegas.

Presidential candidates and politicians have voiced their support for Sen. Bernie Sanders in the wake of his hospitalization.

Speaker Nancy Pelosi says the Vermont senator will have “more energy” after undergoing a cardiac procedure.

Sanders has canceled all upcoming events until further notice as he recovers.

Sen. Bernie Sanders, 78, was hospitalized with chest pain in Las Vegas, Nevada.

Third quarter fundraising roundup: Bernie Sanders raises $25.3 million; Pete Buttigieg raises $19.1 million.

Bernie Sanders unveils "Tax on Extreme Wealth" plan to fund social welfare proposals

The senator delivered remarks at the Comanche Nation Fair in Oklahoma.