Mitt, Hunter, Brownback, Thompson, Newt, Huckabee all would not alienate conservatives. Only two real lemons: McCain and Rudy.
I'm talking about abortion. Only Mitt might make it there, if the flip-flop is overlooked or forgiven.
On your list of those who would not alienate Conservatives, Brownback is pro amnesty and voted against the surge and Huckabee same views.
They are not core conservatives.
Libertarian wing nuts like Ron Paul are anti war.