Overall: Palin 21% Gingrich 19% Romney 18% Huckabee 16% Conservatives: Palin 24% Gingrich 23% Romney 15% Huckabee 14% Men: Palin 23% Gingrich 23% Romney 16% Huckabee 11% 46-65 age category: Palin 21% Romney 18% Gingrich 17% Huckabee 14% 65+ age category: Palin 23% Romney 19% Gingrich 17% Huckabee 17% This is the first time that Palin has led in any national PPP poll of GOP contenders and among these categories. Could this be a preview of coming attractions? Yes, there is no frontrunner right now as Karl Rove suggests. But could Palin become a clear frontrunner by the end of...