Republican presidential candidate Mitt Romney (left) walks toward the Church of Jesus Christ of Latter-day Saints with two unidentified people on Sunday, Aug. 19, 2012, in Wolfeboro, N.H. (AP Photo/Evan Vucci)
President Obama greets the crowd after arriving for a campaign stop at Loudoun County High School on Thursday, Aug. 2, 2012, in Leesburg, Va. (AP Photo/Evan Vucci)
Republican presidential candidate, former Massachusetts Gov. Mitt Romney applauds during a campaign stop at Cornwall Iron Furnace on Saturday, June 16, 2012, in Cornwall, Pa. (AP Photo/Evan Vucci)
Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters at campaign stop at William Jewell College on Tuesday, March 13, 2012 in Liberty, Mo. (AP Photo/Evan Vucci)
Republican presidential candidate, former House Speaker Newt Gingrich talks to reporters during a visit to the state capital on Friday, Feb. 24, 2012 in Olympia, Wash. (AP Photo/Evan Vucci)
Republican presidential candidate, former House Speaker Newt Gingrich pauses during a campaign stop at the Tulare World Ag Expo Tuesday, Feb. 14, 2012, in Tulare, Calif. (AP Photo/Evan Vucci)
Former Utah Gov. Jon Huntsman shakes hands after speaking at an primary election night rally Tuesday, Jan. 10, 2012, in Manchester, N.H. (AP Photo/Evan Vucci) ** FILE **
Washington Redskins quarterback Rex Grossman (8) delivers a pass against the New England Patriots during the first half of an NFL football game on Sunday, Dec. 11, 2011, in Landover, Md. (AP Photo/Evan Vucci)
Navy fullback Alexander Teich, left, and Army linebacker Steve Erzinger talk during the Army- Navy football game luncheon on Wednesday, Nov. 30, 2011 in Arlington, Va. (AP Photo/Evan Vucci)
New George Mason men's basketball coach Paul Hewitt is interviewed during the Colonial Athletic Association NCAA college basketball media day on Tuesday, Oct. 18, 2011, in Arlington, Va. (AP Photo/Evan Vucci)
Chinese President Hu Jintao, left, and Vice President Joe Biden stand for the national anthems of both countries during an arrival ceremony on Tuesday, Jan. 18, 2011, at Andrews Air Force Base, Md. (AP Photo/Evan Vucci)
New York Giants wide receiver Michael Clayton (83) is chased by Washington Redskins defensive end Jeremy Jarmon (90) after making a reception during the first half of an NFL football game on Sunday, Jan. 2, 2011, in Landover, Md. (AP Photo/Evan Vucci)
New York Giants running back Brandon Jacobs (27) drags Washington Redskins linebacker Rocky McIntosh (52) into the endzone for a touchdown during the first half of an NFL football game on Sunday, Jan. 2, 2011, in Landover, Md. (AP Photo/Evan Vucci)