

Actress Lindsay Lohan stands on the red carpet as she arrives for the annual White House Correspondents' Association Dinner at the Washington Hilton, April 28, 2012. Lohan announced that she believes she'll be supporting Mitt Romney at a launch party in California on Oct. 11, 2012. Jonathan Ernst/Reuters
US President Barack Obama sits next to first lady, Michelle Obama (l.), and Oprah Winfrey (r.) during a taping of her television show, 'The Oprah Winfrey Show,' at Harpo Studios in Chicago, April 27, 2011. Larry Downing/Reuters
Republican vice presidential candidate, Rep. Paul Ryan, R-Wis., is introduced by recording artist Kid Rock at a rally at Oakland University in Rochester, Mich., Oct. 8, 2012. Paul Sancya/AP
Actress Scarlett Johansson addresses the Democratic National Convention in Charlotte, N.C., on Sept. 6, 2012. Charles Dharapak/AP
Donald Trump speaks at a news conference in Las Vegas, Feb. 2, 2012, to endorse Republican presidential candidate, former Massachusetts Gov. Mitt Romney (c.) accompanied by Romney's wife Ann. Gerald Herbert/AP
Oprah Winfrey gives the thumbs up to Democratic presidential hopeful, Sen. Barack Obama, D-Ill., during a rally in Cedar Rapids, Iowa, Dec. 8, 2007. Paul Sancya/AP
Actor Clint Eastwood stands next to an empty chair as he endorses Republican presidential nominee Mitt Romney during the final session of the Republican National Convention in Tampa, Florida, Aug. 30, 2012. Jason Reed/Reuters
President Barack Obama, acknowledges actress Sarah Jessica Parker, as first lady Michelle Obama smiles in the East Room of the White House in Washington, before he presented the 2009 National Medal of Arts and National Humanities Medal, Feb. 25, 2010. Parker hosted a fundraiser for Obama at her home in Manhattan in June. Pablo Martinez Monsivais/AP
Actress Kerry Washington applauds after speaking to delegates at the Democratic National Convention in Charlotte, N.C., on Sept. 6, 2012. Lynne Sladky/AP
Actor Chuck Norris greets fans as he campaigns for US Republican presidential candidate and former Arkansas Governor Mike Huckabee at Clemson University in Clemson, South Carolina, Jan. 17, 2008. Norris released a Pro-Romney video in September. Jonathan Ernst/Reuters
Actresses Eva Longoria (l.) and Melanie Griffith (r.) laugh while President Barack Obama speaks at a campaign event in Miami, Oct. 11, 2012. Larry Downing/Reuters
Morgan Freeman attends the AFI Life Achievement Award Honoring Shirley MacLaine, on June 7, 2012 in Culver City, Calif. Freeman narrated a new Obama ad airing in swing states. Chris Pizzello/Invision/AP