2012 Democratic presidential primaries and caucuses were the process by which voters of the Democratic Party chose its nominee for President of the United States in the 2012 U.S. presidential election . President Barack Obama won the Democratic Party nomination by securing more than the required 2,383 delegates on April 3 , 2012 after a series of primary elections and caucuses . He was formally nominated by the 2012 Democratic National Convention on September 5 , 2012 , in Charlotte , North Carolina
2012 Democratic National Convention
2012 Democratic National Convention
2012 Democratic Party presidential primaries