A sign of President Barack Obama's re-election victory during night of the 2012 Presidential election on November 6, 2012 in Times Square, New York City. (Photo by Mike Coppola/Getty Images)

Republican vice presidential candidate, U.S. Rep. Paul Ryan (R-WI) and family wave to the crowd after Republican presidential candidate, Mitt Romney conceded the presidency. (Photo by Matthew Cavanaugh/Getty Images)

Republican presidential candidate, Mitt Romney, speaks at the podium as he concedes the presidency in Boston. (Photo by Matthew Cavanaugh/Getty Images)

Republican presidential candidate, Mitt Romney greets supporters as he concedes the presidency. (Photo by Rick Wilking-Pool/Getty Images)

Republican presidential candidate, Mitt Romney, wife, Ann Romney, and family, walk off of the stage after conceding the presidency during Mitt Romney's campaign election night. (Photo by Alex Wong/Getty Images)

Republican presidential candidate, Mitt Romney, speaks at the podium as he concedes the presidency during Mitt Romney's campaign election night event. (Photo by Alex Wong/Getty Images)

BOSTON, MA - NOVEMBER 07: Republican presidential candidate, Mitt Romney, waves to the crowd while speaking at the podium as he concedes the presidency during Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center on November 7, 2012 in Boston, Massachusetts. After voters went to the polls in the heavily contested presidential race, networks projected incumbent …

Norma Juarez reacts to President Barack Obama being re-elected for another four years as president. (Photo by Andrew Burton/Getty Images)

People are silhouetted on a sign following President Obama's projected re-election during Mitt Romney's campaign election night event. (Photo by Justin Sullivan/Getty Images)

Romney supporter reacts as a state is called for the Republican nominee Gov. Mitt Romney at an election night watch party in Las Vegas, Nevada. (Photo by David Becker/Getty Images)

Barack Obama is declared the winner at Elizabeth Warren headquarters November 6, 2012 Boston, Massachusetts. Photo by Darren McCollester/Getty Images)

The Empire State Building is lit blue after Obama wins the presidential election on election night November 6, 2012. (Photo by Allison Joyce/Getty Images)

CNN's Wolf Blitzer says CNN is projecting that President Barack Obama will win re-election to a second term as president of the United States at 11:18 p.m. on Tuesday, November 6, 2012.

Spectators react to the election results displayed on large televisions during Mitt Romney's campaign election night event. (Photo by Alex Wong/Getty Images)

A spectator in the crowd holds up a sign while watching the election results displayed on large televisions during Mitt Romney's campaign election night event. (Photo by Matthew Cavanaugh/Getty Images)

Nancy French, of Columbia, TN, reacts to the election results displayed on a television during Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center.  (Photo by Alex Wong/Getty Images)

People standing in the crowd react while watching election results displayed on a television during Mitt Romney's campaign election night. (Photo by Joe Raedle/Getty Images)

Supporters of U.S. President Barack Obama cheer after networks project Obama as reelected during the Obama Election Night watch party. (Photo by Chip Somodevilla/Getty Images)

Supporters of U.S. President Barack Obama cheer after networks project Obama as reelected during the Obama Election Night watch party in Chicago. (Photo by Chip Somodevilla/Getty Images)

Craig Romney, son of Republican presidential candidate, Mitt Romney, listens to the National Anthem being sung during Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center. (Photo by Matthew Cavanaugh/Getty Images)

People stand while attending Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center. (Photo by Joe Raedle/Getty Images)

Justin Stucki, Leah Quirk, and Kenady Pettingill urge drivers to vote for U.S. Presidential candidate Mitt Romney on November 6, 2012 in Spanish Springs, Nevada. (Photo by Max Whittaker/Getty Images)

Phillip Webb, left, helps his wife, Marian Webb, cast her vote at Truckee Meadows Fire Station November 6, 2012 in Sparks, Nevada. (Photo by Max Whittaker/Getty Images)

A poll worker inserts an electronic voting card into a machine November 6, 2012 in Sparks, Nevada. (Photo by Max Whittaker/Getty Images)

Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets workers at call center on November 6, 2012 in Pittsburgh, Pennsylvania. (Photo by Justin Sullivan/Getty Images)

Political signs dot the landscape along a highway November 6, 2012 in Madison County near Earlham, Iowa. (Photo by Steve Pope/Getty Images)

Residents cast thier ballots at a polling place inside the Elmwood Roller Skating Rink on November 6, 2012 in Southwest Philadelphia, Pennsylvania. (Photo by Jessica Kourkounis/Getty Images)

New York City firefighter Terence O'Donnell stands on sand among voting machines as he prepares to vote in a makeshift tent. (Photo by Mario Tama/Getty Images)

Quinlan Bucklaew sits on a stuffed elephant at a Romney campaign office November 6, 2012 in St. Petersburg, Florida. (Photo by Edward Linsmier/Getty Images)

A man casts his ballot using an electronic voting machine November 6, 2012 at an elementary school in Bowling Green, Ohio. (Photo by J.D. Pooley/Getty Images)

People enter Washington Mill Elementary School to cast their vote in the U.S. presidential race, on Nov. 6, 2012, in Alexandria, VA. (Photo by Patrick Smith/Getty Images)

Vice President, Joe Biden, casts his ballot in Wilmington, DE. (CNN).

Paul Ryan cast his vote in Janeville, WI. (CNN)

Obama makes a unscheduled stop in Chicago at his campaign field headquarters to make campaign phone calls. (CNN)

Rick Guns of Dubuque, Iowa casts his vote next to a display of yard rakes at his polling site in Theisens Store November 6, 2012 in Dubuque, Iowa. (Photo by Mark Hirsch/Getty Images)

Workers make preparations prior to the Election Night watch party for U.S. President Barack Obama at McCormick Place November 6, 2012 in Chicago, Illinois. (Photo by Spencer Platt/Getty Images)

John Rone fills out his paper ballot on November 6, 2012 at the Pacific Eagles Club in Pacific, Missouri. (Photo by Whitney Curtis/Getty Images)

Head Carpenter Tom Higgins (R) of JCALPRO Inc. assembles a plexiglass barricade with his assistant Harry Butts at the Boston Convention and Exhibition Center for Mitt Romney Campaign's election night event in Boston, Massachusetts.

Photo by Alex Wong/Getty Images

U.S. citizens go to the polls today to vote in the election between Democratic President Barack Obama and Republican nominee former Massachusetts Gov. Mitt Romney. (Photo by Jessica Kourkounis/Getty Images)

A U.S. citizen and Obama supporter makes a call prior to a U.S. election party hostes by Democrats Abroad at the Babylon Theater on November 6, 2012 in Berlin, Germany. (Photo by Sean Gallup/Getty Images)

Republican presidential candidate, former Massachusetts Gov. Mitt Romney ordered lunch at a Wendy's restaurant on November 6, 2012 in Richmond Heights, Ohio. (Photo by Justin Sullivan/Getty Images)

Mike Wigart (C), 30, picks up his surfboard as walks to cast his ballot at a polling station in the garage of the Los Angeles County lifeguard headquarters on November 6, 2012 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

(Photo by Bill Pugliano/Getty Images)

Republican presidential candidate, former Massachusetts Gov. Mitt Romney and his wife Ann Romney prepare to cast their ballots at Beech Street Center on November 6, 2012 in Belmont, Massachusetts. (Photo by Justin Sullivan/Getty Images)

U.S. citizens vote in the presidential election at Carleton Middle School November 6, 2012 in Sterling Heights, Michigan. (Photo by Bill Pugliano/Getty Images)

Tom Hoisington (R) raises his right hand along with grandson Tonykus Hebert, 6, after being registered to vote at the Bishop Leo O'Neil Youth Center on November 6, 2012 in Manchester, New Hampshire.  (Photo by Darren McCollester/Getty Images)

Poll workers wait for voters at an elementary school on November 6, 2012 in Bowling Green, Ohio. (Photo by J.D. Pooley/Getty Images)

Voters walk past supporters holding signs after casting ballots at Northwest Elementary School November 6, 2012 in Manchester, New Hampshire. (Photo by Darren McCollester/Getty Images)