Here's another way to think of this, coming from someone who actually has to decide whether or not to vote for the man. PA has been moving leftward: It went easily to Obama, even in some traditionally Republican areas, it decisively voted out Sen. Santorum, and it switched to Democratic Congressmen in a bunch of races in the '06 elections as well. So Santorum's giving the voters what they want - a Democrat.
And it's not a totally shallow switch - as was pointed out above, he started out as a Democrat but switched to the Republican party when the local Dem machine stood in the way of his running for a higher office. He's pro-choice*, has a moderate/mixed record on gay rights, and I admit this is a pet issue of mine, but I highly respect the work he did with Sen. Kennedy to come up with a compromise bill during the 2006 immigration regulation debacle. I disagree with him plenty, but I don't think he's being purely mercenary here. And based on how he votes and caucuses with the Democrats in the coming months, I'll definitely consider voting for him.
*So for a while there, our Republican Senator was pro-choice and our Democratic one was pro-life. It happens.
Updated On: 4/29/09 at 11:34 AM