Former Virginia Senator Jim Webb on Thursday announced his bid for the White House.

Webb made his announcement in a 2,000-word Facebook post.

“After many months of thought, deliberation and discussion, I have decided to seek the office of the Presidency of the United States,” Webb wrote.

He said that he had decided to run because “our country needs a fresh approach to solving the problems that confront us and too often unnecessarily divide us. … And at the same time our fellow Americans need proven, experienced leadership that can be trusted to move us forward from a new President's first days in office.”

Webb is the fifth candidate seeking the Democratic nomination. Former Secretary of State Hillary Rodham Clinton is considered the race's frontrunner. Also in the race are Vermont Senator Bernie Sanders, former Maryland Governor Martin O'Malley and former Rhode Island Governor Lincoln Chafee. All of Webb's rivals support marriage equality.

While Webb is generally supportive of LGBT rights, he has yet to officially change his stance favoring civil unions, not marriage, for gay and lesbian couples. During a 2014 appearance on Meet the Press, Webb said that the debate “has been a good thing for the country.”