Boston ? Democrat Howard Dean has a 13-point lead over John Kerry in New Hampshire, according to a poll released Sunday, the latest to show the former Vermont governor ahead in a state that has a presidential primary Jan. 27.

After weeks of attacks by rivals and the entrance of retired Gen. Wesley Clark into the race, Dean is maintaining a double-digit lead in most of the surveys.

Dean drew support from 37 percent of those surveyed for the Boston Globe/WBZ, while Kerry, a Massachusetts senator, had the backing of 24 percent.

Sen. John Edwards of North Carolina was backed by 9 percent, Clark 8 percent and Rep. Dick Gephardt of Missouri 7 percent. Sen. Joe Lieberman of Connecticut had the backing of 5 percent, Dennis Kucinich was at 3 percent, and Carol Moseley Braun and Al Sharpton had less than 1 percent. The poll found that 7 percent were undecided or refused to answer.