The day after revealing her husband had tested positive for coronavirus and was hospitalized, Sen. Amy Klobuchar provided an update, saying he's still on oxygen.

Biden addresses his rival’s run for president and how he’s been adjusting to his own virtual campaign amid coronavirus concerns.

The former vice president discusses how he’d help Americans during the global crisis.

The Democratic presidential frontrunner explains why misinformation is his biggest concern amid the COVID-19 crisis.

The Democratic presidential frontrunner discusses his female vice president list and why he wants to appoint a black woman to the Supreme Court.

As states scramble to change their Election Day plans, Democrats are suing to expand voter access.

Former Vice President Joe Biden delivered his plan to combat the novel coronavirus in the United States.

The fact that fewer people are paying attention to voting these days -- for obvious and understandable reasons -- could leave the race lingering for a while longer.

Biden projected to win Arizona, Florida, Illinois primaries amid coronavirus pandemic. The global health crisis has roiled the 2020 election cycle.

Former New York City Mayor Mike Bloomberg is planning to pour a whopping $18 million into the Democratic National Committee.

Governor Mike DeWine filed to postpone in-person voting after new, stringent CDC guidelines amid coronavirus.

Indiana political leaders say they decided to postpone the state's May 5 primary because of concern about the coronavirus pandemic

Former Vice President Joe Biden and Vermont Sen. Bernie Sanders are facing off in the first one-on-one debate of the 2020 presidential primary, airing on CNN at 8 p.m. ET

Former Vice President Joe Biden -- a Democratic front-runner in the 2020 presidential race -- announced his endorsement of Sen. Elizabeth Warren’s bankruptcy plan.

Rep. Tulsi Gabbard ends presidential campaign.

With two candidates left in the race for the Democratic nomination, voters are eagerly awaiting to see who Sen. Elizabeth Warren will endorse.

The Massachusetts senator breaks down how the stimulus plan will help Americans and reacts to Trump’s handling of the pandemic.

"No one knows better about being vice president than Joe Biden. He did the job really well with Barack Obama for eight years,” she said.

Voters in Arizona, Florida and Illinois went to the polls on Tuesday amid a global pandemic that has upended the 2020 election cycle.

Former Vice President Joe Biden is projected to win the Democratic nod in Florida as President Donald Trump is projected to win in Florida for the GOP.

The former vice president picked up a projected win in Illinois after already being projected to win in Florida.

Gov. Mike DeWine defended his closing of polls for primary voting in his state of Ohio in response to the evolving coronavirus outbreak on "The View" Tuesday.

Congressional leaders were informed on Thursday that former Vice President Joe Biden’s presidential campaign has officially requested Secret Service protection.

The U.S. Secret Service says Democratic presidential candidate Joe Biden is receiving its protection beginning this week

The outbreak is affecting millions set to go to polls to vote in presidential primaries.

View primary election results from Washington, part of the 2020 Presidential Campaign.

Following Sunday's debate where Biden and Sanders went head-to-head for the first time, "The View" co-hosts discuss if it's important to commit to commit to a female VP.

On Super Tuesday, more than 14 states and one territory headed to the polls.

Sen. Bernie Sanders is vowing to stay in the Democratic presidential race. His path to the nomination is complicated by multi-state losses on Tuesday.

The crew reacts to the first Biden vs. Sanders one-on-one debate, which took place amid the coronavirus pandemic.

Sunday night’s Democratic debate showcased deep philosophical divisions between the last two remaining major candidates.

The democratic presidential candidates clashed without an in-house audience out of an abundance of caution.

Against the backdrop of a pandemic, former Vice President Joe Biden and Vermont Sen. Bernie Sanders faced off Sunday night in the first one-on-one debate of the race.

The candidates clashed over how they would handle the coronavirus crisis and each other’s records in the first debate since Super Tuesday. ABC News’ Andrea Fujii reports.

The Democratic primary campaign is only approaching its midpoint in terms of available delegates. But the end has never looked closer.

The coronavirus pandemic has thrown a wrench into politics as two U.S. states will delay presidential primaries planned for Tuesday.

Former Vice President Joe Biden is the projected winner of the Mississippi Democratic primary, based on an ABC News analysis of the exit polls.

View primary election results from the March 10 primaries, where votes will be cast in Idaho, Michigan, Miss., Missouri, North Dakota and Washington.

View primary and caucuses election results from North Dakota, part of the 2020 Presidential Campaign.

Former Vice President Joe Biden is the projected winner of the Michigan Democratic primary, based on an ABC News analysis of the vote.

Primary voters in the key battleground state of Michigan as well as Missouri, Mississippi, Idaho, North Dakota and Washington state head to the polls.

Joe Biden's foray into virtual campaigning has gotten off to a rocky start

View primary election results from ballots cast by Democrats living internationally.

View primary election results from Idaho.

The chairwoman of the Congressional Black Caucus has endorsed Joe Biden for president

California Sen. Kamala Harris announced Sunday morning that she is endorsing former Vice President Joe Biden and will campaign alongside him in Michigan on Monday.

Young voters have been Bernie Sanders' most enduring supporters as he tries to win the Democratic presidential nomination over Joe Biden

Sen. Bernie Sanders said on ABC's "This Week" that he will officially receive the endorsement of Rev. Jesse Jackson at a rally in Grand Rapids, Michigan.

The Democratic candidate called on President Trump to declare a national emergency during a speech.

The Former Vice President discussed the need to combat the growing threat of the coronavirus.