Im waiting to see what 3rd party candidates pop their heads up for 2024. It aint DeSantis.
Things can change quickly during election season primaries, but the most likely candidate I can foresee running on 3rd party platform in the general election would be Trump, if he loses the primary. He'd do it purely out of spite if nothing else. "If I can't win for the party, then nobody can." He'd do it knowing full well that he'd split the vote.
My one real hope is that 1) The GOP establishment and Fox tries to shunt Trump aside and 2) Trump goes apeshit and tries to bring them down with him, possibly even going 3rd party. I think there's a non-zero chance it could happen, but I'm not all that optimistic.
Voting 3rd party...you might as well not vote at all. Ralph Nader can rot in hell for sinking Al Gore when he had no chance to win himself. The Green Party deserves nothing but contempt because they help the one party out to actively destroy the environment to prevail...nice going chaps. There's a zero percent chance that a 3rd party candiate will win, so all you are doing is giving up your small voice in who will win.
I had a few friends who stated they were planning to vote for Nader. I tried to convince them that they were giving their vote to Bush, but their responses were, "If I don't vote for Nader, I wouldn't vote for anyone."
After the election was over and Bush had won, their story changed to, "I wish I hadn't thrown my vote away!" It wouldn't have made a difference in my state, but elsewhere like Florida? It definitely mattered.