MANCHESTER, New Hampshire (CNN) -- A new poll of New Hampshire voters planning to cast ballots in next year's Democratic presidential primary showed Sen. Hillary Clinton of New York with a double-digit lead over her nearest opponents, Sen. Barack Obama of Illinois and John Edwards, the party's 2004 vice presidential standard-bearer.

The CNN/WMUR presidential primary poll, conducted by the University of New Hampshire, put Clinton's support at 35 percent, compared to 21 percent for Obama and 16 percent for Edwards, a former senator from North Carolina. The poll's sampling error was plus or minus 5 percentage points.

The only other candidates drawing more than 1 percent support among likely Democratic voters in the Granite State's first-in-the-nation primary were former Vice President Al Gore, at 8 percent, and Sen. Joe Biden of Delaware, at 3 percent. Even though the campaign is in its early stages, just 14 percent described themselves as undecided.