(CNN) -- Two days before New Hampshire's Democratic primary, Sen. Barack Obama has opened a double-digit lead over Sen. Hillary Clinton in that state, a new CNN-WMUR poll found Sunday.

Obama, the first-term senator from Illinois who won last week's Iowa caucuses, led the New York senator and former first lady 39 percent to 29 percent in a poll conducted Saturday and Sunday -- a sharp change from a poll out Saturday that showed the Democratic front-runners tied at 33 percent. Read More