Right, got it. So you're arguing that the overall outcome would have been different if more Millenials voted. I thought you were disputing the fact that they had shifted away from the Democrats by ~5%. Which the polls clearly show to be the case.
There were 9 presidential elections between 1976-2008. In only one did the 18-29 vote go right of the overall vote. I call that an anomaly. More specifically, I attribute it to Reagan's personal qualities and the dramatic success he had produced by the time he ran for re-election. There is a reason why Democrats always target young voters. Like "Rock the Vote" which was originally aimed at Xers. It's because the younger the voter is, the more likely they are to vote for Democrats. In every generation.Whether we're talking Xers or Boomers, your assertion that young people always vote to the left of the electorate as a whole is not consistent with this observation.
Boomers are by no means clearly a "liberal" generation; we're severely divided, and younger Boomers tend to be more conservative than older ones (obviously I'm an exception to that rule). If young voters came out more strongly for Reagan than older ones, that shows a clear conservative bent among late boomers/early Xers (or "Jonesers" if you will) in their youth, which runs solidly against your argument that today's liberal youth voting pattern is age-based rather than generational.
My point was that the GIs' "liberalism" ended in 1952 at the earliest, and 1968 at the latest. Which coincides with midlife.
Remember I said above that Millennials are actually culturally conservative, but in reference to a changed cultural status quo? The same, I believe, was true of GIs, which is why our Awakening made the country significantly more liberal in particular ways than they were comfortable with. This doesn't show a shift in GI attitudes to the right as they got older; it shows, if anything, a failure to keep up with the nation's changes, particularly in areas of culture and values. The main political achievements of their lifetime that were visible to GIs were Social Security, civil rights, Medicare, and America's superpower status. Reagan did not challenge any of the first three, and actually strengthened the third. (There were other things that Reagan did which were more damaging to the New Deal economic system, but those went mostly invisible and misunderstood, and didn't impact retired people significantly anyway.)
If Millennials follow a similar pattern, they may in the late Awakening to come vote for a conservative backlash candidate who nevertheless leaves the significant liberal achievements of this saeculum untouched, and mostly calls for a halt to the Awakening turmoil (which is really what Reagan did). If the nation makes sufficient progress between now and then to push Millennials into the role of old fogies, that will be satisfactory.
Oh, and GIs voted for Clinton, too. Just thought I'd point that out in passing.
More importantly, I will state this again: even if you can argue that generations lean one way or the other, that leaning is not determinative of who wins elections. Boomers (particularly early wave ones) were the largest generational group, and leaned left, throughout the 12 years of Reagan/Bush. That didn't stop them from winning three elections by wide margins. If generations deviate from the overall vote, it's almost always by a small margin. In other words, if Millenials lean left and Xers lean right, Boomers continue to lean right, and potentially Homelanders lean right (although we have no way of knowing that), the Millenial leaning will not be enough to guarantee victories for Democrats any time in the near future, even if they are the largest single group.
Finally, considering that the last 4T consisted of a period of overwhelming dominance for the Democrats and this one clearly has not, the 4T status quo the Millenials will supposedly be defending is not necessarily one that favors the Democrats.