Ann Romney might fill in for Robin Roberts on “Good Morning America” (Richard Drew/AP)

Romney’s wife, Ann, may fill in for Robin Roberts next month on ABC News’s “Good Morning America’ — and there’s still a slim chance that the first lady may pitch in, as well.

An ABC News spokesman confirmed to the TV Column that Ann Romney is a possibility to fill in for Roberts in the show’s 8 a.m. hour one day in October.

Meanwhile, “every effort is being made” to schedule the first lady to do same, the rep said, though her appearance is very much up in the air.

Roberts exited the show temporarily Aug. 30 to undergo a bone marrow transplant, which is scheduled for this week. She revealed on the show in June that she has MDS, a blood and bone marrow disease. Roberts underwent chemotherapy before the transplant, the Associated Press reported this week.

First Lady Michelle Obama may also stop by “GMA.” (Steve Helber/AP)

Ann Romney would join Comedy Central late-night star Stephen Colbert, the cast of the ABC comedy “Modern Family,” Rob Lowe, Barbara Walters and Diane Sawyer, among others who are filling in for show co-host Roberts.

The celebrities — and political wives — will be asked to co-host the show with George Stephanopoulos during that one, lighter hour of the morning infotainment franchise.

The “stunt-casting” of “GMA”s” co-host slot can’t be welcome news for NBC’s competitor “Today” show, which in April saw its 17-year weekly ratings winning streak ended by “GMA.”

“Today” reacted by replacing Ann Curry with Savannah Guthrie the next month, but without retaking its ratings lead.

“GMA” has snagged a bigger crowd than “Today” the past five weeks, and 10 of the past 12 — with “Today” taking the two weeks during NBC’s coverage of the Summer Olympics when the show traveled to London.