But since then, indeed, something has changed. Well, a couple of things have changed. On May 27th, Congressman Joe Sestak announced that he intended to challenge Specter for the Democratic nomination. And since that time, Specter has voted with his party on 28 out of 29 contentious votes, or 97 percent of the time.
Specter's overall party loyalty score since becoming a Democrat -- counting votes both before and after the primary challenge -- is 87 percent. This contrasts with the 44 percent of the time that he broke ranks to side with the Democratic on contentious votes while still a member of the Republican Party. He's basically been behaving like a mainline, liberal Democrat.