Barack Obama 2008 presidential primary campaign in Indiana on May 6, he took the lead in committed superdelegates. The results in those two states made Obama the clear front-runner for the nomination, and he picked up endorsements from 26 superdelegates in the week after those primaries. On August 27 Barack Obama was awarded the Democratic presidential nomination by acclamation at the 2008 Democratic National Convention in Denver, Colorado. Various criticisms were made during the campaign concerning Obama's religious background and heritage, both by political opponents and by some members of the media. In 2004, conservative columnist Andy Martin issued a press release alleging that Obama had
Barack Obama unopposed in the Democratic Party presidential primaries, and on April 3, 2012, Obama had secured the 2778 convention delegates needed to win the Democratic nomination. At the Democratic National Convention in Charlotte, North Carolina, Obama and Joe Biden were formally nominated by former President Bill Clinton as the Democratic Party candidates for president and vice president in the general election. Their main opponents were Republicans Mitt Romney, the former governor of Massachusetts, and Representative Paul Ryan of Wisconsin. On November 6, 2012, Obama won 332 electoral votes, exceeding the 270 required for him to be reelected as president. With 51.1%