NBC News. Retrieved February 20, 2009. "CNN Electoral Map Calculator-Election Center 2008". CNN. The Hill. Retrieved May 18, 2012. See also: "US Presidential Candidate Obama Cites Work on State Death Penalty Reforms". Tumulty, Karen (May 8, 2008). "The Five Mistakes Clinton Made". Barack Obama. Archived from the first on January 30, 2008. Retrieved February 3, 2008. McCormick, John (October 3, 2007).