Here's the question that has obsessed more than a few political experts since the beginning of the presidential campaign: Why does Barack Obama consistently poll behind the generic Democrat in the 2008 race? What that means in regular speech is that when voters are asked whether they would prefer a Democrat or a Republican, the generic Democrat has scored as many as five points higher than Senator Obama does.
This question is often asked in a whisper. Why? Because so many people believe the answer is an ugly one: bias, prejudice, racism--take your pick. Some attribute it to something less distasteful:...