Barack Obama secures Democratic nomination
Barack Obama wins Iowa caucus
Financial crisis of 2007–2008 impacts campaign
First African American major party nominee
First female Republican vice presidential nominee
Hillary Clinton wins New Hampshire primary
John McCain secures Republican nomination
Obama delivers 'A More Perfect Union' speech
Obama's campaign uses social media extensively
Record voter turnout
Sarah Palin selected as Republican vice presidential nominee
Joe Biden selected as Democratic vice presidential nominee
McCain suspends campaign to address financial crisis