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FILE -This Aug. 27, 2008, file photo shows former Rep. Artur Davis, D-Ala., at the Democratic National Convention in Denver. Davis is shifting his voter registration to Virginia and says that if he seeks public office again, it will be as a Republican. Davis, who represented Birmingham in Congress for four terms and then unsuccessfully sought the Democratic nomination for Alabama governor in 2010, announced his decision on his website Tuesday, May 29, 2012. (AP Photo/Paul Sancya) Paul Sancya / AP Photo