Joe Biden said he's spoken to Sen. Bernie Sanders and former President Barack Obama about selecting a running mate — and that he wants to build "a bench of younger, really qualified people" who can lead the nation over the course of the next four presidential cycles.

Driving the news: Biden spoke about the state of the 2020 race during a virtual fundraiser on Friday night that was opened to pooled coverage.

Montana Gov. Steve Bullock said on Friday that every county has opted to expand mail-in voting for the state's June 2 primary, which is not expected to be delayed. Options outside of mail-in ballots are still available to constituents, Bullock said at a press conference.

Why it matters: 23 other states and the District of Columbia haven't held primaries yet. The White House is recommending, for now, that Americans practice social distancing and gather in groups of no more than 10 people — while more than 40 states have issued stay-at-home orders.

Wisconsin Gov. Tony Evers is moving to replace in-person voting in his state's primary election, slated for Tuesday, with an all mail-in election.

Details: Evers is calling the state lawmakers into a special session on Saturday to take up legislation on the issue, which would adopt a May 26 deadline to return ballots. The announcement comes after a judge declined to delay the primary, saying he doesn't have the authority to do so.

Businessman and Dallas Mavericks owner Mark Cuban revived talk of an improbable 2020 presidential bid during an Axios virtual event on Friday.

• "Everything's a reset right now," Cuban told Axios CEO Jim VandeHei from Dallas. "If this would would've been a month ago, I would have said absolutely not. But obviously things are crazy, things are changing. So I'll keep an open mind. But I seriously doubt it."

Former 2020 presidential candidate Pete Buttigieg is launching a political action committee and an affiliated nonprofit, according to sources cited by the New York Times.

The big picture: The PAC, named Win the Era, is expected to endorse young candidates in down-ballot political races to build a "pipeline" for the Democratic Party. The groups will focus on issues such as climate change and cybersecurity. The ex-mayor of South Bend, Ind. is asking donors to roll over the leftover $2.8 million from his general election funds to the PAC.

Go deeper: Biden and Trump are working out details for a call about coronavirus

Joe Biden said during a virtual fundraiser on Thursday night that his staff is working with President Trump and his team to set up a call about the coronavirus and how he can help.

The state of play: "Yesterday, the Trump administration suggested I should call the president to offer my help," Biden said, chuckling. "Well, I’m happy to hear he’ll take my call; my team's working with him to set it up."

A federal judge on Thursday declined to delay Wisconsin's April 7 primary election, saying he doesn't have the authority to do so.

Why it matters: Wisconsin is the only state scheduled to vote next Tuesday that has not yet delayed its primary.

The Trump campaign sent a letter to former Attorney General Jeff Sessions on Tuesday demanding that he stop touting his support of the president during his run for his old Senate seat in Alabama, the New York Times reports.

Why it matters: Trump has had a rift with Sessions dating back to the former attorney general's recusal from the Russia investigation — a decision the president relentlessly attacked him for publicly. Trump has endorsed Sessions' opponent, former college football coach Tommy Tuberville, in the GOP primary runoff election.

Joe Biden's campaign is calling on President Trump's re-election campaign to pull a "wildly irresponsible" video from Twitter that splices in sound to falsely depict Biden calling the coronavirus a hoax — and they're asking Twitter to remove the ad if the president's campaign won't.

Driving the news: Trump campaign officials are using the video posted today to try to force Twitter to act, or to paint the company as biased, after it declined to pull down a different video from a pro-Biden group that the president's team says deliberately used his own words out of context.

A pro-Trump super PAC announced a $10 million ad campaign on Wednesday targeting former Vice President Joe Biden in swing states Pennsylvania, Michigan and Wisconsin.

Why it matters: It's the America First Action PAC's first outlay of the 2020 cycle, and comes as the president has seen rising poll numbers — but heightened scrutiny — as he responds to the coronavirus pandemic.