"Neither this constitution or the constitution of any state, nor state or federal law, shall be construed to require that marital status or the legal incidents thereof be conferred upon unmarried couples or groups."This sentence would bar judges from granting legal privileges to same-sex couples (or groups), but allow state legislatures to make their own decisions in the matter.
Some wordings include a sentence defining marriage as being between a man and a woman. I certainly wouldn't oppose that being included.