The 2012 Democratic National Convention was a gathering, held from September 4 to September 6, 2012, in Charlotte, North Carolina, in which delegates of the Democratic Party chose the party's nominees for President and Vice President in the 2012 United States national election.On April 3, 2012, President Barack Obama won the Maryland and District of Columbia primaries, giving him more than the required 2,778 delegates to secure the presidential nomination.