Democrats should be free to run whoever they wish. Just as 3rd parties deserve to run who they wish on a even playing field.

I personally don’t see either legacy poltical party surviving true electoral competition being opened up to 3rd parties. They’ve used First-past-the-post voting as a crutch for so long their muscles have atrophy and they cannot walk unsupported. Much less sprint in a race to the finish line.

Fortunately for the two mainstream parties, the public at large are heavily influenced by Stockholm syndrome and a giga sunk cost fallacy.

Nothing lasts forever…