I changed to Independent. When they still call me (and they always do), I tell them I charge by the minute for receiving solicitation by phone and then ask “Is that going to be Visa or Mastercard?” The shock on the other side of the phone is palpable and then they hang up.
Haven’t received any calls for quite a while now.
That can keep your money out of the hands of the Establishment Republicans, but it won't help get true conservatives elected.