Obama received enough superdelegate endorsements on June 3 to claim that he had secured the simple majority of delegates necessary to win the nomination, and Clinton conceded the nomination four days later. Obama was nominated on the first ballot, at the August convention. He went on to win the general election, and became the 44th President of the United States on January 20, 2009. Clinton went on to serve as Obama's Secretary of State for his first term as president, and the Democratic nominee for president in 2016.