Sen. John F. Kerry (D-Mass.) described Palin as a member of the "flat-earth caucus," who McCain picked purely to please the conservative base.
"With the choice of Gov. Palin, it’s the third term of Dick Cheney," Kerry said on ABC News' "This Week." "He’s chosen somebody who doesn’t believe climate change is man-made."
Kerry added that Hillary Rodham Clinton supporters should be offended if people suggest Palin was selected to draw some of the female vote away from the Barack Obama-Joe Biden ticket.
"It’s almost insulting to the Hillary supporters," Kerry said, calling Palin a "Cheneyesque social conservative who’s going to satisfy the base. John McCain is a prisoner of the right wing, not a maverick."
The Republican counter attack has been to play up Palin's credentials as "commander in chief" of the Alaska National Guard, with Sen. Lindsey Graham (R-S.C.), saying "she’s tough, she’s talented, she’s ready to lead. … compard to Sen. Obama, she’s qualified beyond belief.”