How the Senate forecast has changed
See how each candidate’s forecasted vote share and chances of winning the seat have changed over time. The forecast updates at least once a day and whenever we get a new poll.
Forecast data prior to the official candidate selection uses our best guess as to who the candidate will be, based on an analysis of incumbency, polls, fundraising, previous experience and endorsements.
Which polls are influencing the forecast for Pennsylvania?
Pick a model!