Historical FiveThirtyEight Senate Forecasts The data behind the story How The FiveThirtyEight Senate Forecast Model Works Header Definition state Election year Year of election candidate Last name forecast_prob Probability of winning election per FiveThirtyEight Election Day forecast result Win or Loss For archived results, see: 2008 https://web.archive.org/web/20081106113055/http://www.fivethirtyeight.com/ 2010 http://elections.nytimes.com/2010/forecasts/senate 2012 http://fivethirtyeight.blogs.nytimes.com/fivethirtyeights-2012-forecast/