Mayor Pete Buttigieg has surged to the head of the Democratic presidential field in first-in-nation primary state New Hampshire, according to a new poll of likely primary voters released Tuesday. The Saint Anselm College Survey Center poll of 255 likely Democratic primary voters shows that Buttigieg, supported by 25 percent, now holds a 10 percentage point lead over former Vice President Joe Biden and Massachusetts Sen. Elizabeth Warren, who are tied for second at 15 percent. Buttigieg is substantially ahead of Vermont Sen. Bernie Sanders, who is in fourth place at 9 percent.