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
2012 United States presidential election in Oregon Democratic victory margin of 12.09%. The Democrats have won the state in every presidential election since 1988. The Democratic primary was held on May 15, 2012. Barack Obama was unopposed for the nomination. The Republican primary occurred on May 15, 2012. Rick Santorum and Newt Gingrich had withdrawn prior to the election, but their names still appeared on the Oregon ballot. In order to participate in the primary, voters were required to register to vote by April 24, 2012. A closed primary was used to elect the presidential, legislative, and local partisan offices. A semi-closed primary, which allowed non-affiliated voters