It has been going along long enough that most people my age or younger would be Republican, not Democratic. Just because your parents have a certain set of beliefs doesn't mean that you do. For example, all of my sister in laws come from very Republican families (one family are wealthy Coptic Christians, another are crazy border patrol people from the only conservative/moderate area in Vermont, and the last one from rural Central Nebraska) even though they are all liberals of varying degrees.
Kind of a non sequitur. This thread is about parents and why they lean Republican. I never suggested that their children would also lean Republican.