Replies

From page one of the PDF:
originated from work that I originally performed at the request of the minority members of the U.S. Commission on Civil Rights. I also served as an expert for USA Today in evaluating the precinct-level data that the newspaper put together, and they provided most of the data upon which this paper is based.
From the last page:

REFERENCES
Chafets, Zev. 2001. Florida Got Bad Rap in Vote Mess. New York Daily News,
June 10.
Hume, Brit. 2001. Special Report with Brit Hume. Fox News Network, June
27.
Thernstrom, Abigail, and Russell G. Redenbaugh. 2001. The Florida Election
Report: Dissenting Statement. Washington, DC: U.S. Commission on Civil
Rights, July 19. http://www.manhattan-institute.org/final_dissent.pdf.
U.S. Commission on Civil Rights. 2001. Voting Irregularities in Florida during
the 2000 Presidential Election. Washington, DC: U.S. Commission on Civil
Rights, June 8. http://www.usccr.gov (see Voting Publications).
U.S. Department of Commerce. Bureau of the Census. 2002. Intercensal
Estimates of the Population of Counties by Age, Sex, and Race (United
States). http://eire.census.gov/popest/archives/1990.php#county.

Since you're the one with the problem with what the guy wrote, you should make the effort to rise above your ignorance. I will give you one obvious place to look:
http://www.census.gov/population/www/socdemo/voting/p20-542.html

The last few pages of the PDF have several data tables for reference as well.