two to twenty-eight neighboring village are organized into groups known as a tambon. the phuyaiban within each tambon elect one of themselves to be Kamnan,or commune headperson. The Kamnan is chairman of a committee which often includes a government school headmaster, an agricultural extension worker, and sometimes a health department doctor or paramedic in charge of a local cliinic. it also contains at least two men selected by Nai Amphoe or by the provincial governor. this committee is responsible for deciding which village should have new roads, irrigation budgets and health services.