FILE - This Oct. 3, 2012 photo shows Ann Romney waiting for the start of the first presidential debate at the University of Denver in Denver. ABC says Ann Romney will guest-host at the

 

              FILE - This Oct. 3, 2012 photo shows Ann Romney waiting for the start of the first presidential debate at the University of Denver in Denver. ABC says Ann Romney will guest-host at the
FILE - This Oct. 3, 2012 photo shows Ann Romney waiting for the start of the first presidential debate at the University of Denver in Denver. ABC says Ann Romney will guest-host at the morning news program "Good Morning America," for its 8 a.m. (Eastern time) hour. Joining George Stephanopoulos at the anchor desk, Mrs. Romney will be filling in for co-anchor Robin Roberts, who is on extended medical leave. (AP Photo/Pool-Michael Reynolds, file)