Axelrod: Biden's Debate Task 'To Pin Ryan Down' On Specifics "I think the big challenge for him is to pin Congressman Ryan down," Axelrod told CBS News on Thursday. "You know, he was on television a couple of weeks ago and he was asked to explain Gov. Romney's tax plan and he said, 'I don't have enough time to explain it. It's too complicated to explain.' He's got 90 minutes tonight. So hopefully he'll have enough time to explain it and explain how they won't explode the budget and put a new burden on the middle class."