This graphic from former Alaska Gov. Sarah Palin's "Take Back the 20" Facebook page shows a U.S. map with the cross hairs of a gun scope imposed over the districts of 20 Democrats. (AP Photo)

This graphic from former Alaska Gov. Sarah Palin's "Take Back the 20" Facebook page shows a U.S. map with the cross hairs of a gun scope imposed over the districts of 20 Democrats. (AP Photo)