B+71st of 556
Mostly Republican-sponsored

Mason Strategies

Mason Strategies has 1 poll in our database and is rated on 2 past polls scored against results (2018).

Rated polls

2

2018

Average miss

2.0

All pollsters: 6.8

Lean

R+0.2

Against other polls of the same races

Picked winner

100%

Of rated polls

Last poll

Oct 20, 2018

2018 United States Senate election in Indiana (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
D+2.0

2 rated polls; misses beyond 10 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
Senate22.05.5D+2.0100%

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. Mason 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 15–20, 20182018 United States Senate election in Indiana (2018)600 VDonnelly 43 · Braun 47R+4—Release

Latest poll ended Oct 20, 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%

100% of its polls were paid for by candidates or party committees.

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