I can see how Biden could be off-putting to people who aren't too familiar with the stuff that was discussed, but Ryan bends the truth too much and you can't do what Obama did and let your opponent get away with lying. You have to call him on it. That's the part of politics that I find disheartening, that some would lie and then act all indignant and offended that you aren't being polite to them. Especially during a debate where appearances usually trump substance in the eye of the undecided voter.
But all this aside I'm more indignant about the voter ID laws and similar voter suppression tactics that have been going on lately. If your guy can't legitimately win an election, well, don't worry about it because we'll just make sure the other guy doesn't get as many votes as he would.