That's the spirit Charles! If you never try, you'll never fail! Of course you'll never win either.
Oddly, we did NOT purge the Virginia Republican committee of moderates (and in fact dumped a solidly conservative leader), but we managed to win election with 3 solidly conservative candidates, because that’s who we chose in the convention.
If you have local committees that pick candidates, you have to stack them with conservatives. But otherwise, you are better off not applying litmus tests to your local committee membership, because that factionalizes your worker base, making it harder to help candidates win election.
Just in the interest of disclosure, I dropped out of our local republican committee last year, before the election, and do not intend to re-join.