Only Losertarians & NeverTrumpers are pushing a 3rd party...
The question is how to stop the RINO control of the primaries?
McConnell is already signaling that he won't support conservatives in the primaries. Running a conservative to challenge a RINO incumbent is a fool's errand because many states have "sore loser" laws that prevent a losing candidate from running again in the general election.
The only way to oust a RINO incumbent is to bypass the primary and run a third party candidate in the general election to siphon votes from the RINO and let the Democrat win.
This has to be planned surgical strikes only in states where the seat can be retaken in the next election, whether it be in two years or six years.
Otherwise, we run into the same problems we have today, with McCarthy supporting Liz Cheney and McConnell supporting whomever will keep him in charge.
-PJ