The raw data behind the story "How The FiveThirtyEight Senate Forecast Model Works" https://fivethirtyeight.com/features/how-the-fivethirtyeight-senate-forecast-model-works/.
A data frame with 207 rows representing US state elections and 5 variables:
Year of election
Probability of winning election per FiveThirtyEight Election Day forecast
`Win` or `Loss`