Following the General Election and Ed Miliband's resignation as the leader of the Labour party, the race for Number 10 has been replaced by a race to become Leader of the Opposition.
These races show incredible similarities. Indeed, anyone watching the Newsnight debate could easily have been convinced that rather than being between four Labour MPs, it was between representatives from the Conservatives, the Lib Dems, UKIP and the Greens.
Below are the probabilities for the candidates over time:
Keep checking here to see how the race has developed - if there hasn't been an update for a while, feel free to give me a prod by leaving a comment below.