The above polls are commissioned by ABC News/Washington Post; CBS News/ New York Times; and CNN/USA Today/Gallup. All data shown relates to the voting intentions of registered voters.
Each poll involves more than 1,000 participants selected at random and questioned by telephone. The stated margin of error is +/- three percentage points, except for CNN/USA Today/Gallup where it is +/- four percentage points. See the individual organisations' websites for further details of methodology.
This tracker loads the most recent poll as the default option.