I'm convinced of it. The reason registration increased: the Pennsylvania primary finally matters. The reason GOP voters have switched to Dem: the Pennsylvania primary finally matters, but only on the Dem side. If you want to participate, that's the only option. And it's been touted rather heavily, with a several week lead-up.
We shall see in the exit polls, if they break down switchovers.
What did you think of Obama's statement about a girl being "punished with a baby?" A great impromptu speaker, but he occasionally reveals his actual thoughts.