Mary Cheney, the younger sister of Liz Cheney, a Wyoming U.S. Senate candidate, criticized her sister's stance on same-sex marriage and urged her own Facebook friends to share the message.
Posting on Facebook on Friday evening, Mary Cheney, who is gay and married her longtime partner last year, wrote: "For the record, I love my sister, but she is dead wrong on the issue of marriage."
Earlier Friday, Liz Cheney revealed her position on same-sex marriage, a topic she has kept relatively quiet about since declaring her candidacy in July against incumbent Sen. Mike Enzi, R-Wyo. Enzi opposes legalizing same-sex marriage.
"I am not pro-gay marriage," Liz Cheney said in a statement responding to an apparent push poll against her in Wyoming. "I believe the issue of marriage must be decided by the states, and by the people in the states, not by judges and not even by legislators, but by the people themselves."
Their father, former Vice President Dick Cheney, supports same-sex marriage, and the younger Cheney echoed some of his language on the issue when she wrote: "Freedom means freedom for everyone."
"That means that all families — regardless of how they look or how they are made -— all families are entitled to the same rights, privileges and protections as every other," Mary Cheney wrote.
The Cheney family dispute mirrors the broader disagreement among Republicans on same-sex marriage.