Jackson50 on 19 September 2008
I believe the National Journal only samples 100 votes to determine its rankings. It is not the most accurate in determining the ideological strength of senators. As a prospective political scientist, let me point you in the direction of a study that better represents the ideological strength of senators. Obama was not the most liberal senator in 2007. He was tied with Biden as the 10th most liberal senator.
http://voteview.com/sen110.htm
