first you talk about "our youth and our society are a good deal more liberal than they were 15 or 25 years ago.". Which you show as having gone from 54% D to 65% D ?? Which I would guess is fairly liberal. Then you go back roughly 40 years to say "The youth in the 1984 Reagan-Mondale election was not liberal".

And the generational thing is what I brought up originally. Boomers and some GenX don't necessarily 'point the way' that every generation will age.