Elsewhere on the trail, vice presidential nominee Paul Ryan's rally in Bristol, Va., was visited by a plane dragging a sign that read, "Romney's GOP: Wrong on Rape and Women."
The message, sponsored by liberal activists MoveOn.Org, is part of an effort to stoke outrage over comments made by the Republican Indiana Senate candidate Richard Mourdock. During a debate Tuesday, "I've struggled with it myself for a long time, but I came to realize that life is that gift from God. And, I think, even when life begins in that horrible situation of rape, that it is something that God intended to happen."
Mourdock has since said his words were "mistook and twisted." Romney, who cut a TV and web ad supporting him in the days before the debate, has distanced himself from the Indiana state treasurer, but not asked his campaign to take down the video.
Mary Bruce contributed to this report