The melding of football and politics as entertainment is a serious (and rare) miscalculation on the part of Fox. Culturally, the Super Bowl is as close as America gets to a shared religious experience. Even with a captive audience, introducing interviews with the candidates will be tantamount to forcing the fans to drink warm beer.
I will watch the game on delay, allowing me to skip the ads and the politicians. So will an ever-increasing number of viewers. Even Super Bowl watchers have their limits.