With the election only weeks away, Ann Romney's guest-host appearance on Good Morning America next week will give her a chance to get her husband's message out. ABC says it is in talks to have first lady Michelle Obama guest-host as well.

Ann Romney, wife of presidential candidate Mitt Romney, will fill in for anchor Robin Roberts as guest host on Good Morning America next Wednesday, The Hollywood Reporter announced yesterday.

Romney will guest-host alongside co-anchor George Stephanopoulos and correspondents Lara Spencer, Josh Elliott and Sam Champion. The show will air Oct. 10, the day before the scheduled vice presidential debate, pitting Vice President Joe Biden against Paul Ryan.

ABC is reportedly in talks to have first lady Michelle Obama also guest-host the program, and is merely trying to find an opening in her schedule.

Roberts is on extended medical leave, having had a bone marrow transplant on Sept. 20. She had breast cancer but was said to be in remission for several years. But earlier this year she learned she had a rare blood disease that can be caused by chemotherapy.

Romney, who has suffered from multiple sclerosis and underwent a lumpectomy in 2008, sent Roberts a message on Twitter after Roberts bid viewers goodbye when she went on medical leave. "Keep on fighting," Romney wrote. "We all stand with you!"

Other previously announced guest hosts standing in for Roberts include Stephen Colbert, Oprah Winfrey, the cast of Modern Family, as well as Roberts' colleagues Diane Sawyer, Katie Couric and Barbara Walters.