A pastor usually leads a Protestant church. Catholic churches are led by priests.

Confession of sins to (God though) a priest is a rite in the Catholic church, but not in Protestant churches. Protestant churches often encourage members to ask forgiveness for their sins directly to God through prayer.

There are more Catholics than protestants in the world, but there are more protestants than Catholics in the U.S. The type of Christianity most often associated with socially conservative Republican/MAGA primary voters is Protestant "evangelical" Christianity.

Evangelicals are a hardcore subset of Protestants who take the Bible literally. They're sometimes called "Born-again Christians" because of their belief in the importance of personal conversion. That is, you're not really a real Christian until, as an autonomous adult, you willingly choose to surrender yourself, mind body and soul, and devote your life to (your pastor's teachings about) the teachings of Jesus.

Anyway, now I've done an eight-hours-later four-paragraph TED-talk riff on what is otherwise quite a fine and clever comment. I mean no offense and hope none is taken. I mostly just wanted to note that when Nikki Haley talks about "pastors," she isn't talking to Catholics; she's talking directly to the GOP evangelical voter base.