The two-day meeting will draw high-powered party figures like Theodore B. Olson, the solicitor general during the administration of George W. Bush, and Ken Mehlman, a former chairman of the Republican National Committee; donors like Paul Singer, the billionaire chairman of the conservative Manhattan Institute, and Jon Kislak, a Miami businessman; and elected officials like Senator Mark S. Kirk, an Illinois Republican, and State Senator Dawson Hodgson, the Republican candidate for attorney general in Rhode Island. About 100 people, most of them donors, are expected to attend, said Jeff Cook-McCormac, a senior adviser to the American Unity Fund.
