Ben Carson has edged out fellow GOP presidential candidate Donald Trump in a new national poll, taking the top spot from the real estate mogul for the first time in months. Carson is supported by 26 percent of GOP primary voters, followed by Trump at 22 percent, according to the CBS News/New York Times poll released early Tuesday. All other candidates follow in the single digits, with Sen. Marco Rubio (Fla.) at 8 percent and businesswoman Carly Fiorina and former Florida Gov. Jeb Bush at 7 percent each. The poll represents growing momentum for Carson, who surpassed Trump in several...