By John King
and Peter Hamby,
updated 7:39 AM EST, Mon January 6, 2014
New York (CNN)
-- Liz Cheney, whose upstart bid to unseat Wyoming Sen. Mike Enzi sparked a round of warfare in the Republican Party and even within her own family, is dropping out of the Senate primary, she said in a prepared statement Monday morning.
"Serious health issues have recently arisen in our family, and under the circumstances, I have decided to discontinue my campaign," she said.
Cheney, the eldest daughter of former Vice President Dick Cheney, began telling associates of her decision over the weekend, CNN reported late Sunday night.
"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," she added.