A constitutional referendum was held in Yemen on 15 and 16 May 1991.[1] The new constitution was reportedly approved by 98.5% of voters, with a 72.2% turnout.[2]
^Dieter Nohlen, Florian Grotz & Christof Hartmann (2001) Elections in Asia: A data handbook, Volume I, p301 ISBN0-19-924958-X