I've uploaded The Daily Show host Jon Stewart, the most trusted man in fake news, for your campaigning pleasure (I think the game mentions him in passing as Stewart Johnson in the Coldcut Repretoire's opening). You can find my creations page at:
https://www.wincustomize.com/users/3368834/jvaughn
Also on tap is San Antonio, TX mayor Julian Castro, a newcomer on the national scene who delivered the keynote speech at the Democratic National Convention 2012. He claims to have no designs on the White House, but they all say that several years before they make a go of it.
Last, and far from least, are the heroic anti-presidential candidates Matt Romney and Rob Paul. If you haven't been following their hilarious "slightly-off uncle saunters over to the computer" campaign, check out them out at:
facebook.com/MattRomney2012
Twitter: @MattRomney2012
facebook.com/RobPaulwasforpres
Twitter: @RobPaul2012