Presidential elections were held in the United States on November 6, 2012. Incumbent Democratic president Barack Obama and his running mate, incumbent vice president Joe Biden, were elected to a second term. They defeated the Republican ticket of former governor of Massachusetts Mitt Romney and U.S. representative Paul Ryan of Wisconsin.
As the incumbent president, Obama secured the Democratic nomination without serious opposition. The Republicans experienced a competitive primary. Romney was consistently competitive in the polls and won the support of many party leaders, but he faced challenges from a number of more conservative contenders. Romney secured his party's nomination in May, defeating former senator Rick Santorum, former speaker of the House and Georgia congressman Newt Gingrich, and Texas congressman Ron Paul, among other candidates.