George Soros Republican! Hummmmm?
Closet Democrat Masquerading as a Republican.
Democrat In Republican Clothing.
Does that make him/her a Liberal Democrat or a Liberal Republican?
John McCain does come to mind. Charlie Crist too. Olympia Snow? Susan Collins? More?
RINOs! DINOs! Democrat Lite! Now, DIRKs!
Dirk = Scottish word for a short dagger.
Right to the heart of the party maybe.