In the National Journal's annual ratings of senators' standings on the political prism you have to hang a Left before you find Sen. Barack Obama, D-Illinois.
Pass Barbara Boxer...Ted Kennedy...keep going.
Pass Sheldon Whitehouse....Robert Menendez...
Oh, look, here's Bernie Sanders of Vermont, a self-described socialist...
Ah, at the waaaaaaay end.
Senator Obama, good to see you sir.
"The insurgent presidential candidate shifted further to the left last year in the run-up to the primaries, after ranking as the 16th- and 10th-most-liberal during his first two years in the Senate," the National Journal writes. "Sen. Hillary Rodham Clinton, D-N.Y., the other front-runner in the Democratic presidential race, also shifted to the left last year. She ranked as the 16th-most-liberal senator in the 2007 ratings, a computer-assisted analysis that used 99 key Senate votes, selected by NJ reporters and editors, to place every senator on a liberal-to-conservative scale in each of three issue categories. In 2006, Clinton was the 32nd-most-liberal senator. "
Read more HERE.
UPDATE: The Obama campaign has some major pushback on this that is worth reading, it calls into serious question these rankings. Check it out HERE.