visibility whip
 n.— «Take, for example, the “America’s Future” signs brought out for President Clinton’s speech Monday night. Hotline sources report that DNCC “visability whips” were under strict orders not to pass them out even one second before New York Sen. Hillary Clinton finished her introduction.» —“Convention Dispatches: Definitely Thinkin’ About Tomorrow…“ National Journal July 27, 2004. (source: Double-Tongued Dictionary)