This question has a margin of error of plus or minus 4 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 New York poll has a margin of error of plus or minus 4.5 percentage points.
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.
The network says it has a margin of error of plus or minus 3.4%.
The poll has a margin of error of plus or minus 3.1 percentage points.
The sample of 303 likely Democratic caucus voters has a margin of error of 6 percentage points.
It has a margin of error of plus or minus 3 percentage points.
That poll was conducted October 19-21 and has a margin of error of plus or minus 4 percentage points.
CNN: Obama takes swipe at McCain adviser's health care comment
The poll was taken September 22-23 and has a margin of error of plus or minus four percentage points.
It has a margin of error of plus or minus 3.5 percentage points.
The poll -- taken between October 19 and 22 -- has a margin of error of 4 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 poll questioned 600 likely Democratic primary voters and has a margin of error of plus or minus 4 percentage points.
The poll surveyed 1, 796 people and has a margin of error of plus or minus 6 percentage points among the minority samples.
CNN: McCain receives polite but tepid welcome from pro-Obama crowd
The Pew survey, which polled 1, 201 people, was conducted in March and has a margin of error of plus or minus 4.3 percent.
The nationally representative survey of 1, 174 Americans conducted online by GfK Custom Research has a margin of error of plus or minus 4.9 percentage points.
Some 49 percent said he shouldn't even run in the new Quinnipiac poll, which surveyed 1, 082 voters and has a margin of error of plus or minus 3 percentage points.
The Field Poll was conducted of 990 likely voters in California between Oct. 27 and Oct. 31 and has a margin of error of plus or minus 3.2 percentage points.
But a Quinnipiac University poll out Wednesday indicated Franks has closed to within five points in a survey with a 3 percent margin of error.
CNN: New Jersey Senate candidate sets spending record -- but loses ground
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