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Riley Research Associates

3 scored general-election polls (2016–2018) , each measured against the certified result. How to read these numbers: methodology.

Record by cycle

CyclePollsAvg. ErrorLeanWinner Called
2018 1 2.4 pts R+2.4 100%
2016 2 3.9 pts D+2.9 100%

Every scored poll

DateRacePoll MarginActualErrorCalled It
2018-09-30 OR Governor D+4.0 D+6.4 2.4 ✓
2016-10-09 OR President D+10.0 D+11.0 1.0 ✓
2016-10-09 OR Governor D+14.0 D+7.2 6.8 ✓

Margins shown as party lead (D+/R+); for non-D-vs-R matchups the margin is first-listed candidate minus second. Historical scored-poll data for cycles through 2023 from FiveThirtyEight's pollster-ratings dataset (CC-BY-4.0); 2024 scored by PollingSource. This record never changes what enters the PollingSource average.

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