In 1992, George H. W. Bush and Dan Quayle ran an unsuccessful re-election campaign for president and vice president of the United States. They were defeated by Democratic presidential nominee Bill Clinton and vice presidential nominee Al Gore. Bush, a Republican president and former vice president under Ronald Reagan, launched his presidential bid in early 1992 and secured nomination for his re-election on August 20, 1992. He was challenged in the Republican primaries by former White House communications director Pat Buchanan, who received less than one percent of the delegates in the Convention.