But what exactly are we hedging? Your feelings! I find out long time ago this is a great way to feel a little bit better when you do not want an outcome to happen but that you feel is quite likely to happen, as in the example above if you do not like the idea of Trump winning a small bet on his favour insurances you that no matter the results you will be somewhat happy the day after the elections.
Reverse betting, ah ah I like it. If you want Trump to win, bet on Biden. If you want Biden to win, bet on Trump. Either way you win something and lose something.
I did the opposite once and lost both the bet and the election, it wasn't pretty !