The Fifty-first Oklahoma Legislature was a meeting of the legislative branch of the government of Oklahoma, composed of the Senate and the House of Representatives. State legislators met at the Oklahoma State Capitol in Oklahoma City from January 2, 2007 to January 3, 2009, during the first two years of the second term of Governor Brad Henry. A tie in the number of seats held by Republicans and Democrats in the Oklahoma Senate resulted in bipartisan leadership. Republicans held the majority of seats in the Oklahoma House of Representatives.