This paper argues that legislative initiative is needed to control party hopping by members of parliament (MPs), especially during the constitutional period for the moving of a motion of no confidence in Papua New Guinea (PNG). The Organic Law on the Integrity of Political Parties and Candidates (OLIPPAC) governs political parties in PNG. In 2003, certain amendments were made to OLIPPAC to control party hopping. However, the provisions were challenged in the Supreme Court. The Supreme Court nullified those amendments on the basis that they restricted and infringed the constitutional rights of MPs and were unconstitutional. The political conditions following the court’s decision contributed to the constitutional crisis/impasse of 2011–12 an...