The 2012 United States presidential election in Arizona took place on November 6, 2012, as part of the 2012 United States presidential election in which all 50 states plus the District of Columbia participated. State voters chose 10 electors to represent them in the Electoral College via a popular vote pitting incumbent Democratic President Barack Obama and his running mate, Vice President Joe Biden, against Republican challenger and former Massachusetts Governor Mitt Romney and his running mate, Congressman Paul Ryan. Prior to the election, all 17 news organizations considered this a state Romney would win, or otherwise considered as a safe red state. Arizona was won by Romney with a 9.03% margin. This is the most recent presidential election in which Arizona failed to back the national w