(CNN) - Sarah Palin spoke out Friday at a rally for Sen. John McCain, urging voters to support the senator in his re-election bid in Arizona.
The rally, in Tuscon, Arizona, was their first joint public appearance since they conceded the 2008 presidential election.
McCain faces a primary challenge from former Rep. J.D. Hayworth and has come under criticism for being too moderate on a variety of issues, including immigration. Several leading Tea Party activists in Arizona have decided not to endorse McCain or Hayworth, criticizing both of their records while serving in Congress.
The enthusiastic crowd greeted Palin with shouts of "Sarah, Sarah," as she, her husband Todd and McCain took the stage.
"Everybody here, supporting John McCain, we are all part of that Tea Party movement," Palin said. "I think he's gonna win this one."