Sometimes, conservatives who care about their country vote for RINOs so guys like Jesse Helms and Phil Gramm can chair Senate committees.
It's called politics...and it's an area of study woefully disregarded by quite a few ignorami at Free Republic.
That’s the purpose of a primary vote, now isn’t it?
When it comes to Congress, I’d vote straight Republican, with exceptions for guys like Specter (then again, I live in Bama, so I don’t have that problem).