Both Wordbones and HoCoRising are down on a TPI spokesperson (Ken Aldrich) for referring to voters as "fat, dumb and happy".
That is a common expression that was probably made off the cuff so I don't think it should be over analyzed, but I'll ignore my own advice and over analyze it anyway. I think this is just a crude way of saying that voters are rationally ignorant. Therefore, the "dumb" part is not applicable to voters, because the emphasis on "rationally ignorant" should be placed on the "rational". When you have a complex system in which it is costly to learn about the issues and your influence on those issues is so small, it does not make sense to pay attention. As a result, if you are a voter the smart thing to do is be uninformed because the costs of being informed exceeded the benefits. This is one of the well known problems of democracy (I know, we live in a republic. But it still has democratic elements.)
So while Mr. Aldrich fails in the marketing department, I think his statement is reflective of voting reality.