Joe Biden has no foreseeable plans to resume in-person campaigning amid a pandemic that is testing whether a national presidential election can be won by a candidate communicating almost entirely from home.

The virtual campaign Biden is waging from Wilmington, Delaware, is a stark contrast with President Donald Trump, who is planning travel despite warnings from public health experts about the coronavirus�s spread. It also intensifies the spotlight on how Biden, the presumptive Democratic nominee, will manage his campaign, with some in his party fretting that his still-developing approach isn�t reaching enough voters.

For now, Biden and his aides are brushing back hand-wringing from Democrats and mockery from Republicans who argue that the 77-year-old is �hiding in his basement.�

�Voters don�t give a s— about where he�s filming from,� campaign manager Jen O�Malley Dillon told The Associated Press. �What they care about is what he�s saying and how we connect with them.�

Biden was more diplomatic in assessing the situation on Tuesday.

�The idea that somehow we are being hurt by my keeping to the rules and following the instructions that (have) been put forward by doctors is absolutely bizarre,� he told ABC�s �Good Morning America.�

O�Malley Dillon took the helm of Biden�s campaign in mid-March, just as coronavirus shutdowns commenced. She recently beefed up the campaign�s digital and finance teams and said she�ll unveil battleground state leadership in coming weeks. She also pointed to budding �partnerships� that include the national party�s battleground state program.

But those moves haven�t prevented critiques from prominent Democrats, including the architects of President Barack Obama�s 2008 campaign, who question Biden�s digital savvy and capacity to build the national vote-by-mail effort that might be necessary to win during a pandemic.

Obama allies David Plouffe and David Axelrod wrote in a recent New York Times op-ed that Biden�s home studios resemble �an astronaut beaming back to earth from the International Space Station.� They encouraged Biden to make wider use of platforms from Facebook and Twitter to Snapchat, Instagram and TikTok.

In a similar piece, Lis Smith, media strategist behind Pete Buttigieg�s 2020 campaign, touted the virtues of local-market media and using celebrities more on other platforms.

Yvette Simpson, who leads the progressive group Democracy for America, said she�s �very concerned� she cannot see �how we�re going to engage people.� She said the campaign has squandered time since Biden took command of the primary in early March.

House Majority Whip Jim Clyburn of South Carolina, a close Biden friend whose endorsement helped spur his run of primary victories, said he�s �very worried� about Democrats building a voter turnout operation that balances in-person voting with absentee balloting.

Clyburn, however, emphasized that it�s not Biden�s place to worry over the details.

�His job is to be the candidate,� Clyburn said.

To some degree, the naysaying reflects Democrats� desperation to beat Trump � who holds a clear early lead in fundraising and organizing � and the reality that Biden emerged from a haphazard primary campaign and must now play catch-up.

Tara McGowan, founder and CEO of the Democrat-aligned digital firm ACRONYM, credited the campaign with making progress. �You can�t just snap your fingers and create an entirely different culture in their campaign,� she said.

Clyburn argued there�s been a turnaround, especially in fundraising. �Winning is a great tonic,� he said.

Biden raised $46.7 million in March, and in April he combined with the Democratic National Committee to raise $60.5 million. Trump and the Republican National Committee have far outraised Democrats this cycle, and they have more than $250 million cash on hand, but Biden�s April total nearly pulled even with Trump�s monthly total of $61.7 million.

Erskine Bowles, one of Biden�s fundraisers and a former chief of staff to President Bill Clinton, said the question isn�t whether Biden will catch Trump in total fundraising � he won�t � but whether he will have the resources to build a winning campaign.

�People are giving to make sure he does,� Bowles said.

From inside the campaign, the outside worries seem as much about timing and perception as about reality: The April and May fundraising windfall is just now being put into hiring. Biden has ramped up his social media presence, including a recent Instagram appearance with soccer star Megan Rapinoe and an economic speech on NowThis, a digital news medium targeting younger voters.

O�Malley Dillon said she has �zero concern that we�re not at pace.�

Critics, Biden allies say, also gloss over how Biden�s core pitch � touting his experience and empathy, making a moral and competence case against Trump, and promising to �rebuild the middle class� � won over Democratic primary voters even before the coronavirus upended daily life. Now, Biden�s argument against Trump is sharpened but stems from the same roots, with recent polling suggesting it�s reaching voters.

�Joe�s got the right message,� Clyburn said.

Indeed, days before his co-signed critique was published, Plouffe appeared at a Biden fundraiser that pulled in more than $1 million. On that call, Plouffe agreed with O�Malley Dillon that Trump�s turbulent presidency alongside Biden�s candidacy means �an expanded map� of battleground states.

Trump is answering with a daunting reelection behemoth.

On a call with reporters Tuesday, the president�s daughter-in-law, Lara Trump, called it the �largest field and data program� in GOP campaign history. And while O�Malley Dillon has spent two months building a general election campaign in a new digital environment, Brad Parscale has long been established in his role as Trump�s campaign manager.

The Trump campaign hasn�t had to worry about money, with the president pulling in more than $700 million so far this cycle.

�The Trump campaign never skipped a beat� when the emphasis shifted to digital, Lara Trump said.

And now the president wants to return to a conventional travel schedule. He travels next on Thursday to Pennsylvania, and aides say he wants to travel at least once a week.

Biden, meanwhile, is �anxious to go out and campaign� but is staying home �to set an example � with this health and economic crisis.�

�This is not politics,� Biden said. �This is life.�

(AP)