Liz Cheney Monday dropped her bid for a U.S. Senate seat from Wyoming.
The former vice president's daughter was challenging Sen. Mike Enzi, R-Wyoming, a low-key, popular three-term incumbent in the state's Republican primary. Cheney was a clear underdog.
Enzi quickly got the backing of many national Republican officials, and stirred controversy last year when she announced she opposed same-sex marriage. Cheney's sister, Mary, is married to a woman..
Liz Cheney issued a statement Monday about her plans:
"Serious health issues have recently arisen in our family, and under the circumstances, I have decided to discontinue my campaign," she said. "My children and their futures were the motivation for our campaign and their health and well-being will always be my overriding priority."
Cheney added that "though this campaign stops today, my commitment to keep fighting with you and your families for the fundamental values that have made this nation and Wyoming great will never stop."