Good question. Illinois is rather split on the issue, except for the area around East St Louis. We get a few newbies down here that want to claim that since the Cubs are an Illinois team, we should all root for them.
I respond by saying "So is the football team at my daughter's high school. They've won one game in two years. Even the cheerleaders don't root for them."
Would that be Judas Iscariot High School?