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About this Poll
This poll interviewed 1,405 registered Wisconsin voters, by both landline and cell phone, March 24-28, 2016. The margin of error is +/- 3.3 percentage points for the full sample. For Republican presidential primary likely voters, the sample size is 471, with a margin of error of +/-5.8 percentage points. For Democratic presidential primary likely voters, the sample size is 405, with a margin of error of +/-6.3 percentage points. For the April 5 Wisconsin Supreme Court election there are 957 likely voters with a margin of error of +/- 4.1 percentage points. All results reported here are for likely voters except where registered voters are used for November elections.

The partisan makeup of this full registered voter sample, including those who lean to a party, is 44 percent Republican, 48 percent Democratic and 7 percent independent. The long-term estimate over the previous 33 statewide Marquette polls, with 28,335 respondents, is 42 percent Republican and 47 percent Democratic, with 9 percent independent. The partisan makeup of this sample, excluding those who lean to a party, is 28 percent Republican, 32 percent Democratic and 36 percent independent, compared to the long-term estimate of 27 percent Republican, 31 percent Democratic and 39 percent independent.