Ann Selzer: prediction track record

Pollster behind the Des Moines Register Iowa Poll, Selzer & Company

Credibility 61% Leans right 10 years half-life
All-time
71%no decay
Resolved
5
Right
4
Wrong
1
Last resolved
5 Nov 2024

Credibility half-life

Ann Selzer: credibility half-life chartCredibility of Ann Selzer from 5 Jul 2007 to 14 Oct 2026, with a 10 years half-life. 5 resolved predictions marked on the line. Now 61%.0%25%50%75%100%20102015202020253 Jan 2008: Barack Obama wins the 2008 Iowa Democratic caucuses (final Iowa Poll: Obama 32%, Clinton 25%, Edwards 24%). (right)4 Nov 2014: Joni Ernst wins the 2014 Iowa Senate race (final Iowa Poll: Ernst 51%, Braley 44%). (right)8 Nov 2016: Donald Trump carries Iowa in 2016 (final Iowa Poll: Trump +7). (right)3 Nov 2020: Donald Trump carries Iowa in 2020 (final Iowa Poll: Trump +7). (right)5 Nov 2024: Kamala Harris carries Iowa in 2024 (final Iowa Poll: Harris +3). (wrong)61%coin flip

Scored 14 Oct 2026. How the score works

Resolved predictions

PredictionMadeResolvedOutcomeEffect on score

Kamala Harris carries Iowa in 2024 (final Iowa Poll: Harris +3).

Trump won Iowa by 13.2 points. Selzer retired from election polling later that month.

Source: Ann Selzer (Wikipedia)

Wrong 76% → 61% (−14.8 pts)

Donald Trump carries Iowa in 2020 (final Iowa Poll: Trump +7).

Trump won Iowa by 8.2 points, while most other polls showed a close race.

Source: Ann Selzer (Wikipedia)

Right 74% → 79% (+5.4 pts)

Donald Trump carries Iowa in 2016 (final Iowa Poll: Trump +7).

Trump won Iowa by 9.4 points.

Source: Ann Selzer (Wikipedia)

Right 71% → 77% (+6.6 pts)

Joni Ernst wins the 2014 Iowa Senate race (final Iowa Poll: Ernst 51%, Braley 44%).

Ernst won by 8.5 points. It was the only late poll close to the final margin.

Source: 2014 United States Senate election in Iowa (Wikipedia)

Right 62% → 72% (+10.5 pts)

Barack Obama wins the 2008 Iowa Democratic caucuses (final Iowa Poll: Obama 32%, Clinton 25%, Edwards 24%).

Source: Ann Selzer (Wikipedia)

Right 50% → 67% (+16.7 pts)

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