Relevant demographics of the mid-term elections

Two graphs from a Washington Post article.  The first shows the age of people who voted in the last ten mid-term elections:

The second shows that this trend of an older populace will continue for our lifetimes:

A major question is what percent of each cohort will vote in future elections?  And how will the priorities and biases of age cohorts be different (or not) in future elections?

Addendum:  From The Dish, a graph showing that voter turnout in this most recent midterm election was the lowest in thirty years.

Those who didn't vote this week are invited not to comment on this post.