PollingSource Logo

PollingSource

The number one source for political election data

Polling Trends
Senate House Governors Primaries Data Generic Ballot Pollsters Analysis Login Subscribe

← All pollster records

GS Strategy Group

4 scored general-election polls (2016–2020) , each measured against the certified result. How to read these numbers: methodology.

Record by cycle

CyclePollsAvg. ErrorLeanWinner Called
2020 1 1.3 pts R+1.3 100%
2018 1 24.6 pts R+24.6 100%
2016 2 5.6 pts R+5.6 100%

Every scored poll

DateRacePoll MarginActualErrorCalled It
2020-10-14 TX-7 House D+2.0 D+3.3 1.3 ✓
2018-10-03 TX-23 House R+25.0 R+0.4 24.6 ✓
2016-10-04 IL President D+17.0 D+17.1 0.1 ✓
2016-10-04 IL Senate D+4.0 D+15.1 11.1 ✓

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.

Support Independent Election Data PollingSource is free and non-partisan. Your donation helps us continue providing accurate election data.

© 2026 Innovative Research and Data Solutions, LLC. All rights reserved.

Data updated regularly from public polling sources.

As an Amazon Associate, PollingSource earns from qualifying purchases.

Methodology • Pollster Records • Privacy Policy • Terms of Service