The GOP is not a human being. Like our government, it is only the combined strength of the individual human beings whose rights it is to protect. Actually it's the combined strength of the voters, a subset of the first group.
I would not vote for any President who advocated for the infringement of any of our inalienable rights. I wouldn't donate or campaign for any Party that had a pro-abortion platform anymore than I would support one that advocated slavery.
You're exactly right; and how would you like it if 50 million of us tried to tell you to shut up?