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About this Poll
The Marquette Law School Poll is the most extensive statewide polling project in Wisconsin history. This poll interviewed 806 registered Wisconsin voters, by both landline and cell phone, January 21-24, 2016. The margin of error is +/- 4.0 percentage points for the full sample. For Republican presidential primary voters, the sample size is 313, with a margin of error of +/-6.5 percentage points. For Democratic presidential primary voters, the sample size is 312, with a margin of error of +/-6.5 percentage points.