I imagine a counterpoint about our voter participation. Another way of looking at it is that the nonvoters are just content to let the other half of the population represent them. They are volunteering for one more layer of representation in our large representative democracy. After all, we're huge and our politics are a lot more complicated than that of other countries. It may be that we require another layer of representation.
Anyway, just musing... this particular blog entry doesn't exactly have a thesis.