All five members of the Sussex County Board of Freeholders could be running for office this year: Hal Wirths and Steve Oroho will seek re-election, while Susan Zellman, Glenn Vetrano and Gary Chiusano say they are considering bid for the State Assembly. The contest will be framed by the Senate race, where longtime incumbent Robert Littell faces a primary challenge from Assemblyman Guy Gregg. That sets up the possibility of two slates: Littell, running with Vetrano and his daughter, Assemblywoman Alison McHose; and Gregg, running with Zellman and Chiusano. Of the Freeholder candidates, Oroho supports Littell, while Wirths, for know, is neutral. Other possible Assembly candidates include former Mount Olive Mayor Paul Lacitra, Morris County Freeholder Margaret Norstrom, and Tewksbury Mayor Shaun Van Doren. Gregg’s campaign will be managed by his predecessor, Richard Kamin, a lobbyist at GluckShaw. Kamin served as Morris County GOP Chairman and as an Assemblyman before becoming state Motor Vehicles Director in 1994.