Why would you vote for a candidate who did not support what you support?
What I would do, or what you would do, is irrelevant.
Since you evaded the question, let me put it this way.
Why anyone vote for a candidate who did not support what they supported?
I didn't evade anything. If you haven't known for years that some conservative voters will not vote for a candidate they disagree with on social issues, or some other issue critical to them, then you aren't very knowledgeable about a segment of conservative voters.
Some wouldn't vote for a pro-choice Republican.
Some wouldn't vote for a Mormon, or based on some other question of religious doctrine.
Some wouldn't vote for someone with a reputation for marital infidelity, or someone who's been divorced, or someone who appears to have no religious faith, or one who seems to have many bad habits, or poor morals.
Ever heard of one-issue voters? They do exist, voters who, if a candidate does not agree with them on their most important issue, they will not vote for the candidate no matter how many other issues they agree on.
Such conservatives would most likely skip voting for a particular office rather than to vote for a party's candidate with whom they have very few agreements.
You need to pull yourself out of your straight-jacketed thinking and realize that everyone does not think like you.
I am almost a one-issue voter on immigration law enforcement, but not quite. But I was never discussing what I would do, or you, or any individual, but how a particular segment of conservative voters can be one-issue voters.