Most voter ignorance, if it was cured by logic and reason and long sessions of NPR, would be replaced by the same voter preferences, justified in different ways. There are Mississippi Republicans who hate Obama because they think he’s a Muslim. Take that away, and they’ll hate him because they’re conservatives and he isn’t. Only 11 percent of Mississippi whites voted for Barack Obama, but only 14 percent voted for John Kerry. These aren’t people who’ll change their minds if they fully grokked the president’s bio.