I'm not sure that's a fair question because there's no agreement as to what a conservative is.
We all have differences on various issues, otherwise this forum would be pretty boring.
I don't think you can do a litmus test. If I'm a social conservative who supports limited government and fiscal responsibility, yada yada, but opposes the death penalty for some reason, am I not a conservative? If I'm an atheist who supports all the conservative positions but doesn't think public prayer in school is a good idea, or at least worth fighting for, am I not a conservative?
The questions are rhetorical, but my point is that "conservative" is kind of a blend of positions which, on the balance, are favored by conservatives.
I would certainly classify myself as a conservative. Pin me down on 50 particular issues, and I'd suspect only a percent or two would actually agree with me on all of them, maybe less.
If you have always voted to the GOP presidential candidate, then obviously you really don't "vote principles over party"; now do you?
Thanks for the reply.