The Nov. 8 defeat of the "personhood" amendment in Mississippi is galvanizing supporters to have a do-over in the state and also push measures in Colorado, Virginia and at least eight other states, say leaders of the anti-abortion movement.

Too many doubts and questions among voters helped doom Mississippi's pro-life "personhood" amendment in voting Tuesday, but anti-abortion forces said Wednesday the vote still marked a sea change in the national debate and that the fight was far from over.

Mississippi voters are likely to be the first in the nation to add to their state constitution "personhood" language that declares unborn children to be persons, effectively outlawing abortion and setting up a potential Supreme Court showdown — if they get a chance to vote on it in November.