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interesting, would love to have access to odds data change over time.
I suppose this is not available anywhere, right?
posted such info graphic in one of the threads about US elections if i remember correctly. Anyway, you can find rating graph with Biden/Trump, take one keypoint, look what odds was at this keypoint and then using ratio between candidates ratings at any needed point as a coefficient, use it on odds.
Maybe not too good in words, if it will be needed, you can ask me i will show you calculations.