Political Action

Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y, makes a campaign stop at the Austin Convention Center in Austin, Texas, Monday, March 3, 2008. Seated right on the stage is Eva Longoria.

Supporters Christine Lahti, right, Melanie Griffith arrive to attend a Town Hall with Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y, at the Austin Convention Center in Austin, Texas, Monday, March 3, 2008.

Actor Forest Whitaker gestures while speaking on behalf of Democratic Presidential hopeful Sen. Barack Obama, D-Ill at a rally on Sunday, March 2, 2008, in Tyler, Texas.

Democratic presidential hopeful Sen. Barack Obama, D-Ill., left, waves as he campaigns with actor Robert DeNiro, right, at rally in East Rutherford, N.J., Monday, Feb. 4, 2008, in the final campaign push before Super Tuesday.

California Gov. Arnold Schwarzenegger, left, and Republican presidential hopeful, Sen. John McCain, R-Ariz., both smile following Schwarzenegger's announcement he's endorsing McCain, Thursday, Jan. 31, 2008, at Solar Integrated Technologies in Los Angeles.

Actor and new United Nations Messenger of Peace George Clooney wears a bracelet that reads "Obama 2008" as he speaks to a reporter at U.N. headquarters, Thursday, Jan. 31, 2008.

Actress Mary Steenburgen and husband, actor Ted Danson, listen as Democratic Presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., not shown, speaks during a campaign stop at the First United Methodist Church in Indianola, Iowa, Wednesday, Jan. 2, 2008. Democratic and Republican candidates went all out to encourage supporters to vote for them in the close Iowa caucus.

Republican presidential hopeful, Sen. John McCain, R-Ariz., left, introduces actor, Wilford Brimley, after making a reference to fellow Republican presidential hopeful, former Arkansas Gov. Mike Huckabee, campaigning with actor Chuck Norris, as McCain makes a campaign stop at Hudson Veterans of Foreign Wars Post 5791, in Hudson, N.H., Friday, Jan. 4, 2008.

Singer John Mellencamp plays music during the last stop of Democratic presidential hopeful John Edwards' 36-hour bus tour around Iowa on Wednesday, Jan. 2, 2008 in West Des Moines, Iowa.

Actor Kevin Bacon performs before a town hall meeting with Democratic presidential hopeful, former Sen. John Edwards, D-N.C., at Ames High School in Ames, Iowa, on Sunday, Dec. 16, 2007.

Actor Chuck Norris, left, a supporter of Republican presidential hopeful, former Arkansas Gov. Mike Huckabee, greets members of the audience before the start of the CNN YouTube Republican party presidential debate Wednesday, Nov. 28, 2007, at the Mahaffey Theater in St. Petersburg, Fla.

Actor James Whitmore speaks in support of Democratic presidential hopeful Sen. Barack Obama, D-Ill., at a fundraising concert for Obama at the Gibson Amphitheatre in Universal City, Calif., near Los Angeles Monday, Dec. 10, 2007.

Actress Ashley Scott waits in line at a West Hollywood, Calif., nightclub to attend a fundraiser for presidential candidate Sen. Barack Obama, D-Ill., Thursday, Aug. 9, 2007.

Tennis legend Billie Jean King speaks during a campaign rally for Democratic Presidential hopeful, Sen. Hillary Rodham Clinton in downtown Washington, Wednesday, June 6, 2007.

Singer Bonnie Raitt performs at a town hall gathering for Democratic Presidential hopeful, former North Carolina Sen. John Edwards, Tuesday, Dec. 18, 2007, in Lebanon, N.H.

Actor Zach Braff, center, waits in line at a West Hollywood, Calif., nightclub to attend a fundraiser for Democratic presidential candidate Sen. Barack Obama of Illinois, on Thursday, Aug. 9, 2007.

Singer Stevie Wonder performs for Democratic presidential hopeful Sen. Barack Obama, D-Ill., at the First AME Church in Los Angeles, Sunday, April 29, 2007.

Kelsey Grammer is seen with President Bush at the "Saluting Those Who Serve" concert for the 55th Presidential Inaugural in this Jan. 18, 2005, file photo in Washington. Grammer is one of the few stars who have donated funds to Republican candidates.

Actor Christopher Knight and his wife, actress Adrianne Curry, wear Obama T-shirts at a Rock the Vote event Tuesday, Nov. 13, 2007, in West Hollywood, Calif.

Democratic presidential hopeful, Sen. Barack Obama, D-Ill., speaks as Oprah Winfrey reacts at a rally in Manchester, N.H., Sunday, Dec. 9, 2007.