[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/09/16/art.mcmahon.profile.jpg caption="The Cook Political Report moved it's rating of Connecticut's Senate race between Linda McMahon and Richard Blumenthal from 'lean Democrat' to 'toss up'."]
(CNN) - Just a few hours before President Barack Obama heads to Connecticut to try and help keep a Senate seat in Democratic hands, a top non-partisan political handicapper is now describing the contest as up for grabs.
The Cook Political Report Thursday moved its rating from "lean Democrat" to "toss up." Later Thursday the president's scheduled to headline an event in Connecticut for state Attorney General Richard Blumenthal, the party's Senate nominee. Blumenthal will face off in November's midterm elections against Republican nominee Linda McMahon. The former pro-wrestling executive has pumped millions of dollars into her bid for the Senate.
A Quinnipiac University poll of likely Connecticut voters released earlier this week indicates that McMahon has narrowed Blumenthal's advantage to six points. The winner will succeed Democratic Sen. Chris Dodd, who announced earlier this year that he would not run for a sixth term in the Senate.
Senior Editor Jennifer Duffy says that new data, including the Quinnipiac survey, suggests "a competitive race that is now up for grabs. As such, the race moves to the Toss Up column."
The Rothenberg Report, another well respected non-partisan political handicapper, is about to change its rating from "Democrat favored" to "lean Democrat." Editor and Publisher Stuart Rothenberg tells CNN that the data doesn't justify ranking the race as a toss up.
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