You are what you vote for. There is no voting "against." In 2012, I voted for FR's own Tom Hoefling and refused to vote for Romney (first GOP candidate in twelve POTUS elections that I refused to support although I am ashamed of some previous votes particularly Richard Nixon 1968, Gerald Ford, Bush the Elder, Robert Dole and John McCain). I am a recovering Republican and that party does not get my vote without earning it. To vote for GOP-E trash is to destroy the party and the country by encouraging the flushing of our nation and the party down the toilet to the ever more leftist sewer.
While you are attempting to occupy a non-existent GOP-E (as you deem necessary) high ground, the party leaders are busily changing party rules to guarantee that neither Trump nor Cruz nor any other conservative favored by the base will be allowed to be nominated. Then the GOP-E will be happy to taunt us by saying. Well, the nomination has gone to yet another soulless unprincipled social revolutionary slave of "the interests" in "GOP" drag. You can vote for GOP-E guy or Hillary becomes POTUS. Sorry, I am not playing that game any more.
If the GOP-E pulls that crap, the four million who refused to vote for that slimebag baby-murdering, perversion supporting, gun grabbing, socialized medicine creating, etc., etc., etc., Romney will become eight million who won't vote GOP-E next time. The party will continue to bleed out until it dies but, by then, it will probably be too late for the USA or Western Civilization. Nominate accordingly. When this country falls, we have nowhere to flee to.
It is not a question of "fighting like dogs." They either nominate an acceptable candidate or they lose, America loses and the infernal GOP finally dies. I will vote for Cruz in the primary. I will vote for him or Cruz or Rubio in the final. I would have preferred Scott Walker but he is long gone and the best public official I have ever witnessed in office from just across the cheddar curtain as we call the WI/IL boundary. If it is any other nominee, I don't see me voting GOP and I was a Reagan state chairman against Ford in another state.
Voting my conscience is most emphatically NOT TREASON. When I become reacquainted with my Maker, not likely that many years from now, I won't have a vote for a despicable greedhead barbarian like Romney (or Paul Ryan) on my record. Don't like that? Tooooooooo bad! But obedience to conscience is NOT TREASON.
Yep. Treason is voting for a politicians who wield government like tyrants.