I just think that sports movies have such a built-in visceral rooting interest an epic win or lose redemptive quality. When they get it right it can make for a really rousing movie experience.
There are two things that come very easily to me: rooting for New York sports teams and making mistakes.
As a politician you have to deal with someone wanting you to fail every day. I think I prefer being in a situation where generally people are rooting for me and if they aren't rooting for me they aren't out there to see my downfall. I respect the people who have the stomach for it.
When we root-root-root for the home team we're rooting for our home as much as the team.