“Sarah Palin definitely gave a boost, no question” said Sen. John Ensign (Nev.), chairman of the National Republican Senatorial Committee. “In races where we were way down, a lot of those races are even. In some of the races that were even, we are up.” And public polls do not tell the full story, Ensign argued. He said internal data show a decisive shift among likely Republican voters who appear ready to turn out in droves on Election Day in states across the board.