Who are these people?

Okay, I can understand the 18% of Americans who, according to the latest Rasmussen Poll, "strongly approve" Bush's handling of the presidency. Namely, I understand that they're lunatics. But the figure I don't get is the 23% percent of those polled who "somewhat approve." How can one have such an opinion--or, rather, lack of opinion--after all that has gone on in our nation in his six years in office? I mean, is there anybody home in there?