Mr Lieberman, Al Gore's running-mate in 2000 and a strong supporter of the war in Iraq, said he would stand as an independent candidate in the mid-term elections, potentially splintering the state's Democratic vote.
Joe Lieberman, who was Al Gore's running-mate in 2000, listed what happened when Mr Clinton stood up to his own party's interest groups and worked with a Republican Congress: welfare reform, free-trade agreements and balanced budgets.