1973 Philippine martial law referendum

The 1973 Philippine martial law referendum was a national referendum in which the citizens' assemblies voted for: The referendum was set from July 27 to July 28, 1973.
 * The ratification of the 1973 Constitution
 * The suspension of the convening of the Interim National Assembly provided in the transitory provisions of the 1973 Constitution
 * The continuation of martial law

This referendum was marred with controversy. It is contested that there could not have been any valid referendum held from January 10 to January 15, 1973. Observers noted that many of the claimed 35,000 citizens' assemblies never met and voting was by show of hands.