WASHINGTON -- So far, J.D. Hayworth's campaign to beat Sen. John McCain for the Republican nomination for McCain's seat in Arizona is looking like little more than a nuisance. A new Research 2000 poll sponsored by Daily Kos, out Friday, showed McCain beating Hayworth easily, 52-37. Meanwhile, McCain ended the first quarter of 2010 with $4.5 million in the bank, after raising more than $2.2 million this year so far. Hayworth announced that he raised more than $1 million, but didn't say exactly how much. (And one of his top advisors, Arizona public relations mogul Jason Rose, recently quit because...