Their parents were Democrats, and they grew up believing that the Democrats were for the little guy, Republicans were just for the Rich.
They are not political junkies, and could not tell you what either party’s platform is. They are beginning to realize that this is NOT their father’s Democrat party, though.
They should have realized it long ago
I was raised a democrat and switched parties when I was 32 in 68 and the democrats have become much more radical since then