During the presidential election campaign, the major-party candidates ran on a platform of change and reform in Washington. Domestic policy and the economy eventually emerged as the main themes in the last few months of the election campaign after the onset of the 2008 economic crisis.
There were several unique aspects of the 2008 election. The election was the first in which an African American was elected President, as well as the first presidential election in which an African American was nominated by a major party for the office of president. It was the first time two sitting senators ran against each other. The 2008 election was the first in 56 years in which neither an incumbent president nor a vice president ran - President George W. Bush was constitutionally limited from seeking a third term by the Twenty-second Amendment; Vice President Dick Cheney chose not to seek the presidency. It was also the first time the Republican Party nominated a woman for Vice President (Sarah Palin, then-Governor of Alaska), and the second time a major party did so. The first time a major party nominated a woman for Vice President was when the Democratic Party nominated Geraldine Ferraro for that office in 1984. Additionally, it was the first election in which both major parties nominated candidates who were born outside of the contiguous United States. Voter turnout for the 2008 election was the highest in at least 40 years and Obama received the most votes for a presidential candidate in American history.
Nine states changed allegiance from the 2004 election. Each had voted for the Republican nominee in 2004 and contributed to Obama's sizable Electoral College victory. The selected electors from each of the 50 states and the District of Columbia voted for President and Vice President of the United States on December 15, 2008. Those votes were tallied before a joint session of Congress on January 8, 2009.
Along with the Democratic and Republican parties, three other parties nominated candidates with ballot access in enough states to win the minimum 270 electoral votes needed to win the election. These were the Constitution Party, the Green Party, and the Libertarian Party. In addition, independent candidate Ralph Nader ran his own campaign.