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 11 electors to represent them in the Electoral College via a popular vote pitting incumbentDemocraticPresidentBarack Obama and his running mate, Vice PresidentJoe Biden, against Republican challenger and former Massachusetts GovernorMitt Romney and his running mate, CongressmanPaul 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 9.06% margin. Obama remains the only president to win two terms in office without carrying Arizona either time since the state's founding in 1912. Arizona is also one of only two states that voted against Obama in both 2008 and 2012 that his vice president Joe Biden would go on to win in 2020, the other being Georgia. This also remains the most recent election where Arizona voted to the right of Georgia, Iowa, Ohio, and North Carolina.
Until 2020, Arizona had been won by the Republican nominee for president in every election since 1952, except when Bill Clinton narrowly carried the state over Bob Dole in 1996. No Democratic presidential nominee has won a majority in the state since Harry S. Truman in 1948, and the 2012 election remains the most recent presidential election in which any candidate won a majority of the vote. This is also the last time that Arizona has backed the losing candidate in a presidential election and the last time a Democrat won the presidency without winning Arizona.
