Have him back off of abortion entirely.
P.S.: Kerry won PA by 2.5% exactly.
Or maybe he should have refrained from gratuitously mentioning Mary Cheney's lesbianism during the debate. He was trying to send a signal to vociferous gay rights groups who hate Mary Cheney because she hasn't condemned her father's politics, but I think it backfired.
I always figured he was trying to do the opposite, and hope that the GOP base would sour on Bush/Cheney since Cheney hasn't condemned his daughter for her homosexuality. But yeah, in any event it was a stupid and not so nice thing to do; someone's personal history in that area should have no relevance on a Presidential campaign. Unfortunately both sides tend to revert to that kind of mudslinging in every election campaign.