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Lake Research Partners partisan·D

15 scored general-election polls (2014–2022) , each measured against the certified result. How to read these numbers: methodology.

Record by cycle

CyclePollsAvg. ErrorLeanWinner Called
2022 1 30.5 pts D+30.5 100%
2020 3 6.4 pts D+5.5 100%
2018 5 5.6 pts D+5.6 75%
2016 2 9.7 pts D+9.7 100%
2014 4 7.5 pts D+3.3 100%

Every scored poll

DateRacePoll MarginActualErrorCalled It
2022-09-08 SD Senate R+13.0 R+43.5 30.5 ✓
2020-11-02 National President D+3.0 D+4.4 1.4 ✓
2020-10-13 CA-4 House R+4.0 R+11.9 7.9 ✓
2020-10-03 CA-1 House R+4.0 R+14.0 10.0 ✓
2018-10-15 AK-1 House R+4.0 R+6.6 2.6 ✓
2018-10-13 MI-2 House R+6.0 R+12.4 6.4 ✓
2018-10-10 WA-3 House D+2.0 R+5.3 7.3 ✗
2018-09-25 AZ-8 House R+4.0 R+10.9 6.9 ✓
2018-04-15 AZ-8 House Even R+4.7 4.7 —
2016-10-12 AK President R+1.0 R+14.7 13.7 ✓
2016-09-30 IA-1 House R+2.0 R+7.7 5.7 ✓
2014-10-09 CA-17 House D+15.0 D+3.5 11.5 ✓
2014-09-28 MI Governor R+1.0 R+4.1 3.1 ✓
2014-09-28 MI Senate D+9.0 D+13.3 4.3 ✓
2014-09-16 KY-6 House R+9.0 R+20.0 11.0 ✓

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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