Following is an excerpt:
The first myth is that African-American turnout in the South is low. Black voters are actually well represented in the Southern electorate: In the 11 states of the former Confederacy, African-Americans were 17.9 percent of the age-eligible population and 17.9 percent of actual voters in 2004, analysis of Census Bureau data shows.
And when socioeconomic status is held constant, black voters go to the polls at higher rates than white voters in the South. In other words, a 40-year-old African-American plumber making $60,000 a year is, on average, more likely to vote than a white man of similar background.
The second myth is that Democratic presidential candidates fare better in Southern states that have large numbers of African-Americans. In fact, the reverse is true, because the more blacks there are in a Southern state, the more likely the white voters are to vote Republican.