Senate GOP Whip Jon Kyl (Ariz.) on Wednesday agreed with predictions that Tea Party candidate Christine O'Donnell's upset primary win has imperiled Republican hopes for taking over the Senate, but said he will help her anyway.

"The conventional wisdom was that Mike Castle was seen as a shoo-in," Kyl told The Hill. "Obviously it will not be as easy for Christine O'Donnell. I'm just assuming that's true; I haven't seen poll results."

Kyl said he is undecided about whether he will donate funds to O'Donnell, but said he will support her candidacy.