From the 2000 Census:

On a regional basis, 54 percent of the Black population lived in the South, 19 percent lived in the Midwest, 18 percent lived in the Northeast and 10 percent lived in the West.

The region with the highest proportion of people reporting Black as a percentage of its total population was the South - 20 percent, followed by the Northeast - 12 percent, the Midwest - 11 percent, and the West - 6 percent.

So, big whoop if most black politicians come from the south...most of the black PEOPLE come from there!

But better questions would be: do 54% of the black elected politicians come from the South? Are more than 20% of the elected officials from the South black?