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Thomas Partners Strategies

Thomas Partners Strategies has 8 polls in our database and is rated on 4 past polls scored against results (2018).

Rated polls

4

2018

Average miss

13.3

All pollsters: 6.8

Lean

R+0.6

Against other polls of the same races

Picked winner

50%

Of rated polls

Last poll

Oct 27, 2018

2018 California gubernatorial election (2018)

Every rated poll against the result

Each dot is one poll from the last three weeks of a race: how far its margin landed from the result. Above the line it overstated Democrats; below, Republicans. Bars show each cycle’s average lean.

  • Poll
  • Cycle average
R+13.3

4 rated polls; misses beyond 20 points are drawn at the edge. Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET

By type of race

Race typeRated pollsAvg. missAll pollstersLeanPicked winner
Governor210.45.7R+10.4100%
House216.36.8R+16.30%

Avg. miss: green where it beats all pollsters’ average for that type. Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET

Among all pollsters

Average miss of every rated pollster, in points. Thomas Partners Strategies is marked; darker bars are pollsters with a smaller miss.

Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET

DatesQuestionSampleResultMarginvs resultSource
Oct 25–27, 20182018 California gubernatorial election (2018)1,068 VNewsom 55 · Cox 42D+13—Release
Oct 18–20, 20182018 California gubernatorial election (2018)1,068 VNewsom 54 · Cox 41D+13—Release
Oct 12–14, 20182018 California gubernatorial election (2018)1,068 VNewsom 51 · Cox 43D+8—Release
Oct 5–7, 20182018 California gubernatorial election (2018)1,068 VNewsom 54 · Cox 42D+12—Release
Sep 28–30, 20182018 California gubernatorial election (2018)1,068 VNewsom 50 · Cox 45D+5—Release
Sep 21–23, 20182018 California gubernatorial election (2018)1,068 VNewsom 53 · Cox 42D+11—Release
Sep 14–16, 20182018 California gubernatorial election (2018)1,040 VNewsom 45 · Cox 41D+4—Release
Sep 7–9, 20182018 California gubernatorial election (2018)1,227 VNewsom 48 · Cox 40D+8—Release

Latest poll ended Oct 27, 2018. Source: each poll’s own release, via the 99chambers polls database

Who it polls for

Sponsors of its polls since 2018, by share of polls.

No sponsor named100%

No polls for candidates or party committees on file.

Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET