There's more info and speculation at the Daily Kos.
Federal authorities are investigating allegations that a California defense contractor arranged for a Washington area limousine company to provide prostitutes to convicted former congressman Randy "Duke" Cunningham (R-Calif.) and possibly other lawmakers, sources familiar with the probe said yesterday.
In recent weeks, investigators have focused on possible dealings between Christopher D. Baker, president of Shirlington Limousine and Transportation Inc., and Brent R. Wilkes, a San Diego businessman who is under investigation for bribing Cunningham in return for millions of dollars in federal contracts, said one source, who requested anonymity because the investigation is ongoing.
The Cunningham investigation's latest twist came after Mitchell J. Wade, a defense contractor who has admitted bribing the former congressman, told prosecutors that Wilkes had an arrangement with Shirlington Limousine, which in turn had an arrangement with at least one escort service, one source said. Wade said limos would pick up Cunningham and a prostitute and bring them to suites Wilkes maintained at the Watergate Hotel and the Westin Grand in Washington, the source said.