I started writing this as a comment in
this blog, but decided it was getting long and off-topic so I'd move it to my own.
David raises the question of why Hillary Clinton does well with older voters, and Obama does well with younger voters. I'm going to make the radical suggestion that it's because she's fifteen years older than he is :-) ... but why are those fifteen years so significant?
( political issues of Hillary's generation, and of Obama's )