When the Republican Jewish Coalition hosted its annual winter conference at Las Vegas’s splashy Palazzo hotel earlier this month, party luminaries such as Mississippi Gov. Haley Barbour and South Carolina Sen. Lindsey Graham showed up to hobnob with some of the GOP’s most generous donors. But the guest who seemed to excite the audience the most was a diminutive, former mid-level State Department official who has never held elected office. Introduced by Miriam Adelson, wife of casino magnate Sheldon Adelson, Elizabeth Cheney delivered a rousing attack on Barack Obama’s foreign policy that won her a standing ovation. It was an impressive performance by Cheney, a policy wonk, law-school grad, and mother of five who may now be bidding to establish America’s next political dynasty.