The "blue wall" is a term used by political pundits to refer to the 18 U.S. states and the District of Columbia that the Democratic Party won in each presidential election from 1992 to 2012. George W. Bush, the only Republican president elected during this time, was able to narrowly win the electoral college in 2000 (271) and 2004 (286) only by winning enough states outside of the blue wall to defeat his Democratic opponents, Al Gore and John Kerry, respectively.