Greenberg secession referendum, 1978

A referendum was held on Saturday 9 July 1978 in the Greenberg Region of Sierra, Enderron to decide whether the region should secede from Sierra and become a prefecture of Enderron.

The proposal for prefecturehood was supported with a significant majority, with more than 58 percent voting in favour. The three northern counties (Campbell, Harding and Northport) separated from the rest of Sierra and became the prefecture of Greenberg on 28 October 1979, a day now celebrated as Greenberg Day.

Analysis of results
All three counties returned strong "Yes" majorities; the "Yes" vote ranged from 55.51 percent in Campbell County to 64.26 percent in Harding County. The highest "Yes" votes came from the rural eastern interior parts of Harding County and the town of Northport, while the strongest "No"-voting areas were around the Van Buren urban area and communities near the border with Longshan.