The Democratic Party is no longer a political party. It has no platform except TDS, LBGTQ-BLM insanity, illegal immigration, violence/assassination, and financial corruption.
Could happen.
But it would take votes from the 2 parties, possibly in equal measure.
Who would be affected the most? Its could be a Ross Perot situation
The trouble for you is they’re (Dems) the official opposition party right now and will cash-in on any wavering support for the wars or whatever this November
They’re ahead in polls it looks like. Purging the GOP of libertarians is probably not a good idea
Fracturing the winning coalition .,