Some more information the reader may find of interest. Betting exchanges have market makers and heavy automated trading, just like financial exchanges. The pri

Some more information the reader may find of interest. Betting exchanges have market makers and heavy automated trading, just like financial exchanges. The price is arbitraged and adjusted in real time between the different exchanges. The two biggest exchanges after betfair are smarkets and bet365. The first closed the market and redistributed the money. The second didn't seem to accept betting on the US election. It means that the betfair market is in free wheel, no more connected to the rest of the world, it can effectively show any price. Smarkets: https://smarkets.com/event/886736/politics/us/us-presidential-election-2020/2020-election-winner https://smarkets.com/event/886736/politics/us/us-presidentia...