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Anthropology professor Janet Bennion studies polygamy, and has spent time with members of the Allred Group in Montana.

On Thursday in Lyndon State College in Lyndonville, Vt, she'll discuss what she considers the next frontier in marital rights: the legalization or decriminalization of polygamy.

The calendar item from the college says Bennion will be joined by two lawyers who will critique her arguments. Vermont Public Radio, in its story about Bennion's arguments, described the discussion as a debate.

Bennion and a colleague are also the editors "The Polygamy Question," a new book examining the academic arguments for and against legalizing polygamy. The book, from Utah State University Press, is due in January.

In her radio interview, Bennion seems to advocate not just for the decriminalization of polygamy, which is effectively what has happened in Utah so long as you don't have multiple marriage licenses, but a system which allows more than two people to enter into a marriage contract.

Twitter: @natecarlisle