My dad has moved some of his previous views. I think some of it was talking to me, and some reading I suggested, and some was being part of a societal shift that was happening anyway.
One change he made was his views on abortion. I don’t think he ever voted or took much consideration about the topic; he never focused on it. About 20 years ago I told him about the book Freakonomics and he found some of the statistics interesting regarding the correlation between legal abortion and crime. He’s a sociologist, so possible affects on overall society interested him. Later, I told him how I was worried even back in 2006 about my safety having had failed pregnancies and living in a city that the two closest hospitals were Baptist and Catholic.
My dad during Bush really opened his eyes to the extreme religious hold in the Republican party and left the party for good, but he still maintains some conservative views on some fiscal topics, but never enough to vote Republican again any time soon.