A constitutional referendum was held in Chad and Ubangi-Shari on 13 October 1946 as part of the wider French constitutional referendum. The proposed new constitution was rejected by 77.3% of voters, with a turnout of 64.5%. However, the constitution was approved by a majority of voters in the overall results.
References
French constitutional referendum, October 1946 (Chad–Ubangi-Shari) Wikipedia(Text) CC BY-SA