From Why We Shouldn’t Trust ‘Independents’ By Jonathan Bernstein at The Washington Monthly:

[Here’s] a reminder of my good-enough way of thinking about how the actual electorate breaks down: it’s one-third Republican, one-third Democratic, one-third independent…but that final one third is itself really one-third Republican, one-third Democratic, and one-third (and thus one-ninth overall) true independent. And what’s more, those true independents are overwhelmingly the least informed and least attentive to politics…