Celebrities Stump for Obama, Romney in Final Push to Election Day

The likes of Jon Bon Jovi and Kid Rock are popping up everywhere on the campaign trail.

Former President Bill Clinton greets singer/songwriter Bruce Springsteen at a campaign event for President Barack Obama Thursday in Parma, Ohio.

It's time for Bill, the Boss, Clint, and Meat Loaf to work their magic.

President Obama and Republican challenger Mitt Romney are rolling out their celebrity endorsers in the final push to Election Day, and that means a parade of big (and not so big) names will be popping up on the campaign trail.

Obama deployed rock icon Bruce Springsteen, also known as "the Boss," on his behalf in Ohio last week. But no one is more important as an Obama surrogate than former President Bill Clinton, one of the most popular figures in politics today. Clinton has been active in speaking for Obama and plans to be on the road again in the final week of the campaign. "This is not a complicated decision," Clinton said in Ohio, a key battleground state. "If somebody saved my economy, I'd be for him."

[READ: Two Weeks Out, Presidential Election Gets Nasty]

Other celebrities who have spoken out for Obama include singers Beyonce, Jon Bon Jovi, and Eddie Vedder, actresses Eva Longoria and Ashley Judd, actors George Clooney and Morgan Freeman, and baseball legend Hank Aaron.

Romney has been boosted by the endorsement of actor-director Clint Eastwood, who is appearing in an ad on Romney's behalf and who spoke for him at the Republican National Convention, when he talked to an absent Obama in an empty chair.

[READ: Eastwood Delivers Bizarre But Crowd Pleasing Convention Speech]

Other celebrities who are backing Romney include comedian Jeff Foxworthy, musicians Kid Rock and Meat Loaf, and former Denver Bronco quarterback John Elway.

Each candidate has also deployed his wife to appear at various events, mainly to add a personal touch and talk about the candidate's character. Ann Romney has appeared on "The Tonight Show," "Good Morning America" and "The View," among others shows. Michelle Obama has also been active on the talk-show circuit in addition to speaking at rallies and giving many interviews.

Romney has also deployed his five sons, who are popular speakers on his behalf. "Between my five kids and my brothers, there are 18 grandkids now that my dad has," said son Josh Romney. "So he thinks about those 18 grandkids. This is why he's in the race." Obama's two daughters, Malia and Sasha, aren't old enough at 14 and 11 to appear publicly except on rare occasions, campaign aides say.

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There's lot of debate among political strategists and academics about whether celebrities have much impact on voters. It's doubtful that they sway opinion, but they do draw attention to a candidate through the media and sometimes create a sense of excitement, and that's considered helpful by the campaigns.

Ken Walsh covers the White House and politics for U.S. News. He writes the daily blog "Ken Walsh's Washington" for usnews.com, and is the author of "The Presidency" column for the U.S. News Weekly. He has written five books, most recently Family of Freedom: Presidents and African Americans in the White House. He can be reached at kwalsh@usnews.com and on Facebook and Twitter.