Former Vice President Dick Cheney will headline a fundraiser for a newly formed super-PAC supporting his daughter's Senate campaign, according to The New York Times.

Cheney will attend a Washington, D.C., dinner for Cowboy PAC, a group formed to help Liz CheneyElizabeth (Liz) Lynn CheneyOvernight Finance: Shutdown looms | Paul holds up Senate vote | House GOP scrambles for budget votes | What's in the deal | Dow falls 1,000 points for second time this week | Conservatives threaten Fed nominee | Trump announces IRS pick House GOP leaders scramble for budget votes Overnight Tech: GOP bill would bar agencies from using Chinese tech | How Russian accounts used Tumblr during the election | Warren, Equifax spar over breach claims | Dem worries about tech addiction | New lobster emoji MORE (R) in her race against Sen. Mike Enzi (R-Wyo.). The fundraiser costs $10,000 per couple. 

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Cheney has become increasingly involved in his daughter's campaign, and stepped out to defend her in a public family feud over her gay marriage views. After Liz Cheney repeatedly proclaimed she opposed gay marriage, her sister Mary, who is gay, took to Facebook to attack her, leading to a public statement from the elder Cheney and his wife defending Liz.

Liz Cheney has struggled to gain much traction against Enzi since she launched her campaign. Many Wyoming Republicans say it'll be difficult for her to convince voters she's really from the state — she's lived on the East Coast most of her life and only moved back to Wyoming a few years ago.