WASHINGTON (AP) — Liz Cheney, daughter of former U.S. Vice President Dick Cheney, is quitting her effort to win a seat in the Senate, according to published reports.

In a statement, Cheney cited "serious health issues" that "have recently arisen in our family" as the reason for her decision to leave the Republican Wyoming Senate primary, according to The New York Times.

Cheney's effort to replace Senate veteran Mike Enzi angered many Republicans, and her campaign faced a number of problems.

In November, Cheney said she opposed gay marriage, starting a public feud with her sister, Mary, who is a lesbian and married.

She did not immediately respond to a request for comment from The Associated Press.

Her father served as vice president under President George W. Bush.