Sen. John McCain and Sarah Palin are together again and on the campaign trail to defend McCain's Senate seat.

On Friday, the pair teamed up in Arizona for the first time since losing the presidential race. Many say this is the toughest re-election battle of McCain's career.

J.D. Hayworth, a former congressman and conservative radio talk show host, is proving to be a tough primary challenger for McCain.

After the rally, Palin attended a fundraiser event. She will speak at more events in Phoenix and Mesa over the weekend.