he can work across the party and with republicans. we need a president who can do that. >> right now, a head-to-head poll among pennsylvania voters show biden edging out over trump, the front-runner in the democratic polls. 500 days away from election day. do you worry about whether biden can maintain this lead so early out? >> this is a marathon, as you know. people put fortunes in campaigns. he is a long distance runner. jill is a long distance runner. he told me months ago, she wants me to do this maybe more than he wants to do it. i think he is doing it for the right reasons. our country needs him. he has a great woman behind him. >> right now, among the 22-23