More Gallup Polls

During today's examination of party identification I remembered Nate Silver's piece about coming of age during different Presidential administrations.

Mr. Silver argues:

What's interesting, though, is what happens when we look at not these abstract generational categories, but rather at the following question: who was President when you turned 18? As annotated in the chart below, the popularity -- or lack thereof -- of the President when the voter turned 18 would seem to have a lot of explanatory power for how their politics turned out later on.