Mitt Romney, Ann Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, second from left, and his wife Ann, left, sits in a holding room with his family before he participates in the third presidential debate with President Barack Obama on Monday, Oct. 22, 2012 in Boca Raton, Fla. (AP Photo/ Evan Vucci)

Mitt Romney, Ann Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, second from left, and his wife Ann, left, sits in a holding room with his family before he participates in the third presidential debate with President Barack Obama on Monday, Oct. 22, 2012 in Boca Raton, Fla. (AP Photo/ Evan Vucci)

Mitt Romney, Ann Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, second from left, and his wife Ann, left, sits in a holding room with his family before he participates in the third presidential debate with President Barack Obama on Monday, Oct. 22, 2012 in Boca Raton, Fla. (AP Photo/ Evan Vucci)

Mitt Romney, Ann Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney and his wife Ann, leave the Church of Jesus Christ of Latter-day Saints after services on Sunday, Sept. 2, 2012 in Wofeboro, N.H. (AP Photo/Evan Vucci)

MItt Romney, Ann Romney, Matt Romney

Republican presidential candidate and former Massachusetts Gov. Mitt Romney sits with wife Ann and son Matt and daughter-in-law Laurie in a holding room before he participates in the second presidential debate with President Barack Obama at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. (AP Photo/Charles Dharapak)

Mitt Romney

FILE – In this Nov. 7, 2012, file photo Republican presidential candidate, former Massachusetts Gov. Mitt Romney, arrives to give his presidential election night concession speech in Boston. A 97-page election post-mortem, commissioned by the Republican Party after Romney's loss last fall, said the GOP “is increasingly marginalizing itself, and unless changes are made, it will be increasingly difficult for Republicans to win another presidential election in the near future.” (AP Photo/Rick Wilking, Pool)

Mitt Romney

FILE - In this Thursday Dec. 22, 2011 file photo, Republican presidential candidate, former Mass. Gov. Mitt Romney, visits St. Paul's Lutheran Church while campaigning in a Berlin, N.H. neighborhood. How unthinkable it was, not so long ago, that a presidential election would pit a candidate fathered by an African against another condemned as un-Christian. And yet, here it is: Barack Obama vs. Mitt Romney, an African-American and a white Mormon, representatives of two groups and that have endured oppression to carve out a place in the United States. How much progress has America made against bigotry? (AP Photo/Charles Krupa)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney waves to members of the audience before the start of the last debate with President Barack Obama at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Pablo Martinez Monsivais)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney shakes hands with President Barack Obama before the start of the third presidential debate on Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/ Evan Vucci)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney boards his campaign plane in Ronkonkoma, N.Y., Wednesday, Oct. 17, 2012, after Tuesday's presidential debate with President Barack Obama. (AP Photo/Charles Dharapak)

MItt Romney, Ann Romney, Matt Romney, Laurie Romney

Republican presidential candidate and former Massachusetts Gov. Mitt Romney sits with wife Ann in a holding room before he participates in the second presidential debate with President Barack Obama at Hofstra University in Hempstead, N.Y., Tuesday, Oct. 16, 2012. Also pictured, left to right: son Ben Romney; daughter-in-law Laurie Romney; son Matt Romney; son Josh Romney. (AP Photo/Charles Dharapak)

Romney signature

Mitt Romney

Republican presidential candidate Mitt Romney hands out hot dogs as he campaigns at the Federated Auto Parts 400 NASCAR Sprint Cup Series race at Richmond International Raceway in Richmond, Va., Saturday, Sept. 8, 2012. (AP Photo/Charles Dharapak)

Mitt Romney

FILE - In this Aug. 29, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney speaks at the American Legion National Convention in Indianapolis. When Romney addresses the Republican convention Thursday night, he'll do it from a stage that puts him a little bit closer to the crowd inside the convention hall. His campaign hopes the evening ends with Americans feeling a little bit closer to the Republican presidential candidate, too. (AP Photo/Evan Vucci, File)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney eats ice cream after making a stop at Millie's before a fundraising event on Saturday, Aug. 18, 2012 in Nantucket, Mass. (AP Photo/Evan Vucci)

Mitt Romney

FILE - In this June 28, 2012, file photo Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks about the Supreme Court's health care ruling in Washington. Millions of uninsured Americans may have to wait until after Election Day to find out if and how they’ll be able to get coverage through President Barack Obama’s health care overhaul because many governors from both parties said they haven’t decided how their states will proceed on two components under their control: an expansion of Medicaid, and new insurance exchanges. (AP Photo/Charles Dharapak, File)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney makes a statement on the shootings in Colorado on Friday, July 20, 2012 in Bow, N.H. (AP Photo/Evan Vucci)

Mitt Romney

FILE - In this June 28, 2012 file photo, Republican presidential candidate Mitt Romney speaks about the Supreme Court ruling on health care in Washington. President Barack Obama and Republican Mitt Romney say the Supreme Court’s decision last week upholding the president’s health care law gives them each advantages in the roughly dozen of states they are contesting most aggressively. Obama’s team says the decision has swelled the ranks -- by the thousands -- of campaign volunteers in states he won in 2008 and hopes to again to seal his re-election. Romney is claiming success using the ruling as a fundraising tool, saying thousands of small contributions have poured in from across the battleground map as the law’s opponents have seized on Romney as a last hope to repeal it. Both say the groundswell is on their side, and could make the difference in winning and losing. (AP Photo/Charles Dharapak, File)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks at the NALEO (National Association of Latino Elected and Appointed Officials) conference in Orlando, Fla., Thursday, June 21, 2012. (AP Photo/Charles Dharapak)

Romney 2012

Supporters of Republican presidential candidate, former Massachusetts Gov. Mitt Romney, cheer as they watch the results at his election night party in Novi, Mich., Tuesday, Feb. 28, 2012. (AP Photo/Carlos Osorio)

Romney 2012

Supporters of Republican presidential candidate, former Massachusetts Gov. Mitt Romney, cheer as they watch the results at his election night party in Novi, Mich., Tuesday, Feb. 28, 2012. (AP Photo/Carlos Osorio)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, pauses while speaking to a group of former Salt Lake City Olympics committee members, marking the tenth anniversary of the games, in Salt Lake City, Utah, Saturday, Feb. 18, 2012. (AP Photo/Gerald Herbert)

Mitt Romney

Republican presidential candidate, former Massachusetts Gov. Mitt Romney, pauses while speaking to a group of former Salt Lake City Olympics committee members, marking the tenth anniversary of the games, in Salt Lake City, Utah, Saturday, Feb. 18, 2012. (AP Photo/Gerald Herbert)

Mitt Romney

Republican presidential candidate former Massachusetts Gov. Mitt Romney speaks at a campaign rally in Mesa, Ariz., Monday, Feb. 13, 2012. (AP Photo/Gerald Herbert)