With less than two weeks before the first votes are cast in Iowa, a new national poll is showing that Newt Gingrich, and Mitt Romney, the two top contenders for the GOP nomination are now locked in a tie at 30 percentage points each, among GOP and GOP-leaning independent voters, according to a new Washington Post/ABC News survey released Tuesday.

Ron Paul, the Libertarian Congressman, is in third with 15 percent. No other candidate received more than single digits...