(CNN) - Guess who's getting slimed now in the increasingly nasty Senate race in Delaware: Republican stalwarts Bill Kristol and Fred Barnes. The charge: both men, editors of the conservative magazine the Weekly Standard, are trying to undermine Delaware Republican Senate candidate and tea party darling Christine O'Donnell, or so her campaign manager says. "Call Bill Kristol and ask him why he's crossing swords with Governor Palin's endorsement. And Google Fred Barnes and see about him taking money from Republican leadership," a frustrated O'Donnell campaign manager Matt Moran told CNN. O'Donnell just won the endorsement of Sarah Palin. The Weekly...