Videographers hired by political parties to track opponents appear to be busier than in the past, working year-round rather than just during the thick of campaigns. At least that’s the case in Maine, where Republican Gov. Paul LePage is demanding that Democrats call off their tracker who’s been showing up at the governor’s public events. If not, he’ll refuse to meet with Democratic leaders. Political science assistant professor Christopher Mann of the University of Miami in Florida says trackers are very common in campaigns – especially closely contested races. They’re even used in some cases to in what Mann calls “self-defense” – to make sure a candidate’s statements aren’t taken out of context. But when it impedes governing as it’s doing in Maine, Mann’s doesn’t think tracking is a good thing.