Clinton stands at 31 percent, with Obama 1 percentage point behind, well within the poll's margin of error of plus or minus 5 percentage points.
The poll had 1, 538 adult respondents, with a sampling error of three percentage points.
The GOP sample of 306 likely caucus participants had a margin of error of 6 percentage points.
The sample of 303 likely Democratic caucus voters has a margin of error of 6 percentage points.
Pollsters surveyed 1, 010 American adults, with a sampling error of three percentage points.
The poll -- taken between October 19 and 22 -- has a margin of error of 4 percentage points.
Clinton's 1-point lead over Obama, 31 percent to 30 percent, is within the poll's margin of error of 5 percentage points.
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Those questions had a margin of error of 3 percentage points.
The poll of 1, 165 New York City voters, conducted by phone between Nov. 14 and 18, with a margin of error of three percentage points, asked who did the best job responding to the disaster.
The sampling error varied from question to question, but none had a margin of error exceeding 4.5 percentage points.
The survey, based on telephone interviews with 1, 001 adults conducted October 1-3, has a margin of error of 3.5 percentage points.
The margin of error is 2.2 percentage points.
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The poll had a margin of error of plus or minus 3 percentage points.
That result was within the poll's margin of error of plus or minus 4 percentage points.
This question has a margin of error of plus or minus 4 percentage points.
The poll had a margin of error of plus or minus 2 percentage points.
That survey had a margin of error of plus or minus 4 percentage points.
The decline is within the poll's sampling error of plus or minus 3 percentage points.
All those questions had a margin of error of plus or minus 3 percentage points.
The question had a margin of error of plus or minus 3 percentage points.
The poll has a margin of error of plus or minus 3 percentage points.
The poll has a margin of error of plus or minus 5 percentage points.
The margin of error is plus or minus 3 percentage points for the most recent survey.
The national poll has a margin of error of plus or minus 3 percentage points.
The poll has a margin of error of plus or minus 4 percentage points.
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