The morning after Pennsylvania's primary elections, "Radio Times" took stock of what happened at the polls. Michael Hagan, graduate chair of the political science department at Temple, said that if there is a national force that's really important, it's the ongoing polarization of the parties in American politics. "The Republican Party is becoming more clearly the party on the right; the Democrats are more clearly the party on the left. As a result, we are getting more diametrically-opposed political candidates in the general elections," Hagan said.