Sen. John McCain may have a comfortable lead over J.D. Hayworth going into Tuesday's Arizona Republican Senate primary, but he didn't get there without a fight. McCain spent $21 million in an effort to bury Hayworth in the primary and shifted to the right on immigration and other issues, even shedding the "Maverick" label he once embraced. Hayworth joined CBS News' John Dickerson on "Washington Unplugged" Monday in this week's installment of "Behind the Ballot." The host brought up McCain's latest anti-Hayworth campaign ad tying the former congressman to convicted ex-lobbyist Jack Abramoff. The ad claims "Hayworth received $150,000 from...