I REALLY dislike the Bush family. If Jeb runs, I will work as hard as I can in the primary to defeat him.
If I am unsuccessful, and he winds up being the most conservative candidate in the general election, then yes I will vote for him.
If he becomes President, and there is a more conservative candidate that challenges him in the primary in 2020, then I will work to get that candidate elected.
I realize this approach won’t work for some, but I have used it my entire life, and I never have any personal angst come election day.
Then you have a stronger stomach than I. In 2012 I criticized those who refused to vote for Romney, but realized my own error afterwards. The stupid look on Karl Rove’s face that night told me I wasn’t going to participate in another fiasco by this same establishment who lose both house and senate under Bush, and who repeatedly and openly attack and demean true conservatives in congress.