Former Secretary of State Colin Powell also said in May that he believes same-sex marriage should be legal. He was the chairman of the Joint Chiefs of Staff when "Don't Ask, Don't Tell" was implemented in 1993. When announcing his support of the repeal of DADT in 2010 he said, "In the almost 17 years since the 'Don't Ask, Don't Tell' legislation was passed, attitudes and circumstances have changed."
Of course the most high-profile "evolver" on the issue has been President Obama, who, in May, told ABC News' Robin Roberts that he had changed his mind and now personally supported same-sex marriage. It was after Biden said on NBC's "Meet the Press" he had changed his views on same-sex marriage and was now "comfortable" with it. Many believe this forced the president's hand earlier than he may have wanted to make an official announcement.
Ellner said that when people do evolve they "embrace the change."