Forecasters give Clinton a 99% lock on Michigan; Sanders wins
Polling averages showed Hillary Clinton leading Bernie Sanders in Michigan's Democratic primary by around 20 points, and FiveThirtyEight's forecast gave her better than a 99 percent chance of winning.

A methodological miss that overstated the establishment front-runner rather than favoring either party.
What was reported
Polling averages showed Hillary Clinton leading Bernie Sanders in Michigan's Democratic primary by around 20 points, and FiveThirtyEight's forecast gave her better than a 99 percent chance of winning.
What actually happened
Every major Michigan poll had Clinton ahead by double digits and none showed Sanders leading. Sanders won the primary on March 8, 2016, in what analysts called one of the largest primary polling misses on record. The miss foreshadowed the state's polling failure in the general election eight months later.
The proof
The certified Michigan primary result, a Sanders win, against a polling average of roughly Clinton +20 and a 99%+ forecast.
The receipt. Copy this and paste it anywhere:
Forecasters give Clinton a 99% lock on Michigan; Sanders wins — Bad Call. The certified Michigan primary result, a Sanders win, against a polling average of roughly Clinton +20 and a 99%+ forecast. Full file: https://www.thepropagandafiles.com/case/michigan-primary-polling-miss-2016/
Original reporting
- NPR: Why did the polls fail to predict Sanders's Michigan win? (documents the forecast; secondary)https://www.npr.org/2016/03/09/469837001/why-did-the-polls-fail-to-predict-sanders-win-in-michigan
Corrections, findings & records
- Reason: Polls miss badly in Michigan Democratic primaryhttps://reason.com/2016/03/09/whats-the-matter-with-michigan-polls-mis/
- HuffPost: Sanders stuns pollsters in Michiganhttps://www.huffingtonpost.com/entry/sanders-stuns-pollsters-michigan-primary_us_56e02544e4b0b25c91803073
- NBC News: What happened in Michigan?https://www.nbcnews.com/politics/2016-election/sanders-surprise-win-clinton-s-defeat-what-happened-michigan-n535336
Archived copies
Stories get edited after publication. These open the Internet Archive's earliest saved copy of each original.
- Archived copy: NPR: Why did the polls fail to predict Sanders's Michigan win? (documents the forecast; secondary)https://web.archive.org/web/2/https://www.npr.org/2016/03/09/469837001/why-did-the-polls-fail-to-predict-sanders-win-in-michigan