When we finally dump the GOP and start our own Conservative Party, it will have a clearly defined mechanism for expelling people.
Imposed on the states from on high, you mean? Would we even need a primary in this utopia of yours?
40% Rat
20% GOP
20% “Conservative Party”
20% Independent
How do you ever win an election? You can play with the numbers a bit but 40-45% are always going to be hard core Rat. 5 to 6+% of the Independents are going to be swayed by liberal arguments. The next 5 to 6+% of the Independents are going to be swayed by conservative arguments. The remaining will just go with what looks best and makes them feel good.
Again if you split the conservative vote how did you ever win another election? We do not have a parliamentary system.
It's better (but hard to do!) seize control of the GOP from the ground level and work our way up.
One thing you have to give the Rats credit for they are very disciplined in their desire for power. Without political power all discussions regarding turning this mess around are academic.