A referendum on the electoral system was held in Liechtenstein on 30 May 1935.Dieter Nohlen & Philip Stöver (2010) Elections in Europe: A data handbook, p1172 Voters were asked whether they approved of introducing a system using proportional representation. The proposal was rejected by 53% of voters. Nevertheless, a proportional system was later adopted in 1939.Nohlen & Stöver, p1159
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