"While Clinton continues to hold a double digit lead over Sanders, the Brooklyn-born Sanders has tightened the race in the last month over Clinton, the twice-elected former United States Senator from New York," Siena pollster Steve Greenberg said in a statement. "Sanders has widened his lead among voters under 35 to a whopping 52 points, up from 17 points, while Clinton leads among voters over 55 by 22 points, although that's down from a 39-point lead with older voters. The younger voters are feeling the 'Bern' but the question is will they come out and vote in large numbers, as older voters historically do?"