JFK was a liberal and far from perfect, but he is significantly better than today’s Democrats. And he was 100 percent right on taxes (except that he didn’t cut them enough.)
His election killed America, but as liberal as he was, he would be different today.
JFK and FDR, and the democrats were as liberal as they could get away with at the time, today they would still fit in, for instance few know that JFK was pro-abortion, because it was not a big topic at the time.
I don’t think JFK would belong to the party of the religious right today and of Evangelical Christians.