Previous referendums in 1958 and 1961 had been in favor of integration. Both the Guam Legislature and Saipan Congress had passed resolutions requesting reunification. The 1963 referendum was organized by the local Parliament as members wanted the islands to integrate with Guam, and was timed to coincide with the 1964 visit of a United Nations commission looking at the status of the UN Trust Territories.
|Integration with Guam||1,231||96.78|
|Source: Direct Democracy|
- Northern Mariana Islands, 27 October 1963: Status Direct Democracy (in German)
- "History of Efforts to Reunify the Mariana Islands". Guampedia.