Voters who came of age during the eight years of the Bush Presidency are roughly eight points more Democratic than the rest of the country; that advantage could be worth an extra point or two to Democrats throughout the next half-century.
More importantly, this move to the left by this group of voters began long before Barack Obama came on the scene.
To which Jon Henke wisely notes:
Republicans had better become more appealing to young people, because patterns established in youth persist for life.
Time, it seems, is running out.
Update: More evidence here.