Greg Mankiw has some thoughts. I don’t believe that high voter turnout is an intrinsically desirable goal, which is why I’m opposed to “motor voter” and other means designed to increase participation. If people aren’t willing to do a little work for their franchise, they don’t deserve it, as far as I’m concerned. The goal should be informed votes, with quality, not quantity. Of course, that wouldn’t work out well for the Dems.