Both must use the phrase "most important" in 2028 referring to the 2028 election.
If there are not two candidates because of a collapse of democracy this resolve No.
In what way is it destructive?
The Church teaches that transgenderism is spiritual warfare against God and that the act of "transitioning" is deeply sinful.
As for your question about how the Republican Party is too soft on transgenderism, I have decided it is substantive.
The Christian worldview is that it is a sin. It is wrong, full stop. The GOP is happy to ban trans ideology reaching kids, but still holds to this false sense of libertarianism manifested by secularism and fundamentally secularist values that "people should be able to do what they want as long as no one's getting hurt." Unlike the GOP, we maintain that transgenderism should be totally banned.
The GOP is not a Christian party and Donald Trump is not a Christian man