“Wasn’t he originally a ‘Rat?”
Correctomundo, Sailor!
“In 1965, Specter ran for District Attorney, on the Republican ticket as a registered Democrat. He handily beat incumbent Jim Crumlish, and subsequently changed his registration to Republican. “
http://en.wikipedia.org/wiki/Arlen_Specter
So, ole Arlen just switches parties when it suits him. He doesn’t like the way the wind is blowing, poof, switch parties. Sounds like it’s all about him winning instead of governing. Who knew? /s