FILE - In this Oct. 1, 2012 file photo, Ann Romney, wife of Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks, in Las Vegas. She's her husband's chief defender, even taking on his GOP critics. Since the GOP convention, Ann Romney has been venturing out on her own and working to woo women who polls show like President Barack Obama more than her husband. (AP Photo/Julie Jacobson, File)

Associated Press
FILE - In this Oct. 1, 2012 file photo, Ann Romney, wife of Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks, in Las Vegas. She's her husband's chief defender, even taking on his GOP critics. Since the GOP convention, Ann Romney has been venturing out on her own and working to woo women who polls show like President Barack Obama more than her husband.  (AP Photo/Julie Jacobson, File)
FILE - In this Oct. 1, 2012 file photo, Ann Romney, wife of Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks, in Las Vegas. She's her husband's chief defender, even taking on his GOP critics. Since the GOP convention, Ann Romney has been venturing out on her own and working to woo women who polls show like President Barack Obama more than her husband. (AP Photo/Julie Jacobson, File)