You don’t even have to go back to 2002...Toomey vs. Specter. You could even potentially add McClintock vs. Ahnold in Kollyforneea to that list.
}:-)4
Huh? Having a different candidate in a primary constitutes sabotaging the party? That is absurd. My examples were of moderates actually leaving the party to sabotage the GOP candidate in a general election.