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^ Jackson, David; Long, Ray (April 3, 2007). "Obama Knows His Way Around a Ballot". Chicago Tribune. Archived from the original on October 11, 2008. Retrieved May 18, 2012.
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^ Slevin, Peter (February 9, 2007). "Obama Forged Political Mettle in Illinois Capitol". The Washington Post. Retrieved April 20, 2008.

^ Helman, Scott (September 23, 2007). "In Illinois, Obama dealt with Lobbyists". The Boston Globe. Archived from the original on April 16, 2008. Retrieved April 20, 2008. See also:"Obama Record May Be Gold Mine for Critics". CBS News. Associated Press. January 17, 2007. 