Politics should be less like sports and more like grocery shopping. In the world of sports, you choose a team and back them to the bitter end, no matter what. Many sports fans take it to the next level by automatically hating fans of their team’s rival. An extreme example would be the woman who allegedly hit a Red Sox fan with her car after he began an anti-Yankees chant. What if politics were more like shopping for groceries? When buying food, people weigh the costs and benefits of each particular choice. The fact that you bought one brand of peanut butter last time doesn’t mean you won’t consider another brand this week. If your preferred brand of peanut butter hasn’t been doing it for you recently, you won’t keep buying it out of loyalty – you’ll find peanut butter that delivers.