Because Fox does all their work for them...?
All Republicans have to do is keep their mouths shut...and say "Yes" or "No" to the leading questions Hannity asks them...
God Forbid they should actually make a "wrong answer" to Hannity...!
Example: Typical Fox Interview of a Republican.
Hannity: Why do you think that Obama is a Radical Socialist...?
Republican: Probably because he hates America because he wasn't born here and he was abandon by his African Father who was a Communist...? Right...?
Hannity: Exactly...!