Probolsky Research
Probolsky Research has 2 polls in our database and is rated on 3 past polls scored against results (2014–2018).
Rated polls
32014–2018
Average miss
9.5All pollsters: 6.8
Lean
R+0.1Against other polls of the same races
Picked winner
67%Of rated polls
Last poll
Oct 30, 20182018 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
3 rated polls; misses beyond 15 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 type | Rated polls | Avg. miss | All pollsters | Lean | Picked winner |
|---|---|---|---|---|---|
| Governor | 2 | 11.7 | 5.7 | R+11.7 | 100% |
| House | 1 | 5.1 | 6.8 | R+5.1 | 0% |
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. Probolsky Research is marked; darker bars are pollsters with a smaller miss.
Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET
Recent polls
All 2 in the database| Dates | Question | Sample | Result | Margin | vs result | Source |
|---|---|---|---|---|---|---|
| Oct 25–30, 2018 | 2018 California gubernatorial election (2018) | 900 V | Newsom 47 · Cox 37 | D+10 | — | Release |
| Aug 29–Sep 2, 2018 | 2018 California gubernatorial election (2018) | 900 V | Newsom 44 · Cox 39 | D+5 | — | Release |
Latest poll ended Oct 30, 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 polls for candidates or party committees on file.
Source: 99chambers pollster ratings and polls databaseUpdated Oct 22, 2026, 3:55 AM ET