Republican National Convention delegates have adopted a platform that is at odds with certain nominee John McCain on abortion rights.

The nonbinding document calls for an outright ban on abortion. It doesn't include exceptions allowing abortion in cases of rape, incest or where a mother's life would be in danger. Those exceptions all are favored by McCain.

The platform approved during Monday's truncated opening convention session also highlights a difference between McCain and his running mate, Alaska Gov. Sarah Palin. She opposes abortion in all cases.

Convention delegates also adopted a rule Monday to keep the Iowa caucuses and the New Hampshire primary at the front of their presidential nominating calendar.