here is kaitlyn huey burns on the challenges of campaigning out, just keeping my distance.>> reporter: like many americans presidential candidates are now working from home. >> as a matter of fact i think we are both sitting in our own homes. >> reporter: social distancing has put the campaign season's big rallies, selfie lines and/or knocking on hold. candidates are pressing ahead online with a brand-new set of challenges. >> we are going to continue to do things virtually until we can see you in person, until then stay safe and healthy. >> reporter: joe biden has turned the basement of his wilmington delaware home into a television studio, find creative ways to engage supporters and raise money virtually. >> welcome everybody to our first virtual happy hour. i have in here, gatorade. >> reporter: while biden leads bernie sanders in the delegate count it may be a while before the former vice president can claim the democratic nomination. several states have delayed their primary contest until june creating a new summertime super tuesday. the democratic national committee p