Polyfidelity (also sometimes called Polyexclusivity) is a form of polyamory where all members are considered equal partners and agree to be sexually active only with other members of the group. The term originated in the Kerista Village commune in San Francisco which practiced polyfidelity from 1971 to 1991. The community expected all of its members, within bounds of gender and sexual orientation, to be sexually active with all other members, and for exclusive relationships not to be formed. However, this aspect of polyfidelity is not always expected today.

Polyfaithful relationships are, like monogamous relationships, closed in the sense that partners agree not to be sexual outside the current members of the group. The difference is that more than two people are included in the closed group. New members may generally be added to the group only by unanimous consensus of the existing members, or the group may not accept new members.

Previous to the Kerista Village experience, people would have likely called this arrangement "complex marriage" or simply a "group marriage." Indeed, one might think of polyfidelity as being very much like monogamy except that it may include more than two people (and may or may not be open to adding new members). The broader term polyamory was coined later, in the early 1990s.

Sarah Louise Palin ⁱ/ˈpeɪlɨn/ (née Heath; born February 11, 1964) is an American politician, commentator and author. As the Republican Party nominee for Vice President in the 2008 presidential election, she was the first Alaskan on the national ticket of a major party and first Republican woman nominated for the vice presidency. Her book Going Rogue has sold more than two million copies. Since January 2010, she has provided political commentary for Fox News, and hosted a television show, Sarah Palin's Alaska. Five million viewers tuned in for the first episode, a record for The Learning Channel.

She was elected to Wasilla City Council in 1992 and became mayor of Wasilla in 1996. In 2003, after an unsuccessful run for lieutenant governor, she was appointed Chairman of the Alaska Oil and Gas Conservation Commission, responsible for overseeing the state's oil and gas fields for safety and efficiency. The youngest person and first woman to be elected Governor of Alaska, Palin held the office from December 2006 until her resignation in July 2009. She has since endorsed and campaigned for the Tea Party movement, as well as several candidates in the 2010 midterm elections. From the time of her Vice Presidential nomination in 2008, Palin was considered a potential candidate for the 2012 presidential election until she announced in October 2011 that she would not run.

Sister Wives is an American reality television series broadcast on TLC which started in 2010. The show documents the life of a polygamist family, which includes patriarch Kody Brown, his four wives and their 17 children. The family began the series living in Lehi, Utah, but has since moved to Las Vegas, Nevada. The seven-episode first season ran from September 26 to October 17, 2010, and drew strong ratings according to Nielsen Media Research. Season two of Sister Wives began on September 25, 2011. Season three returned on May 13, 2012.

Brown and his wives have claimed they participated with the show to make the public more aware of polygamist families and to combat societal prejudices. Brown has claimed his polygamist arrangement is legal because he is legally married only to one woman, and the other marriages are spiritual unions. Nevertheless, the series led the Brown family to become investigated for possible prosecution.