Cheney, 47, had been staging a primary campaign to represent the Republican Party in November Senate elections in the western state of Wyoming, challenging long-time Republican Senator Mike Enzi.
‘Serious health issues have recently arisen in our family, and under the circumstances, I have decided to discontinue my campaign,’ she said in a statement on Monday, without elaborating on the health concerns.
‘My children and their futures were the motivation for our campaign and their health and well being will always be my overriding priority.’
The campaign had prompted a public spat within the Cheney family after Liz Cheney spoke out against gay marriage, drawing outrage from her lesbian sister Mary and her wife.
Read more from this story HERE.