Who are the forerunners - Trump, Biden, RFK- Jr,
It would be fascinating to see RFK-Jr get in, very unlikely I'd imagine due to his status as the enemy of truth, unfortunately it looks like Trump vs Biden.
It's doubtful he can even get on all state ballots right now so it's technically impossible for him to win out right.
Even if he was on them I'd bet everything I have in the bank that no 3rd party candidate could win. It's too hard the way the US system is set up