What happens to the gambling payouts when Trump is declared the winner of the 2020 election?

Here’s an interesting situation: many people placed bets on the 2020 election. The bets have been paid out because Biden “won”.

What happens when that result is declared null and void?

Do the payouts have to be returned? Biden did win, but only temporarily. Trump also won.

One could argue that Biden won or Trump won. One could argue that Biden cheated and therefore didn’t really win.

Could payouts be demanded back after nine months? Could rightful winners demand payouts since they turned out to be right?

This should be fun.

Or maybe I’m getting a little ahead of myself.