Sullivan County Mayor Richard Venable Has Announced He Will Seek Re-Election. He Filed A Petition Yesterday To Seek The Republican Nod. Venable Has Held The Office Of Mayor Since 2014 After Serving From 2002 To 2006. County Commissioners Mark Vance And Angie Stanley Have Also Filed Petitions To Challenge Venable In The Gop Primary, Which Will Be Held On May 3rd.