“I'm a great believer in coattails,” wrote Jan Ting in an essay. Ting is a professor at Temple’s Beasley School of Law. “In a presidential election year, candidates in down ballot races get caught in the draught of the presidential race, for better or for worse. This year, especially in Pennsylvania, enthusiasm is running high for both presidential campaigns, which complicates in particular the U.S. Senate race between Senator Bob Casey and Republican challenger Tom Smith.”