About PNG,
Electoral System

National elections are held every five years, and many hundreds of candidates run for seats in the National Parliament. Commonly, a high proportion—as many as three-fourths—of sitting MPs may lose their seats in a given election cycle, indicating popular discontent with the performance of legislators and reflecting the intensity of competition and fragmented nature of their electorates. Some regions have seen electoral violence and fraud. International and domestic observers, including civil- society watchdog groups, citizen election monitors, and local churches, have for decades alleged problems of corruption in government.