Four referendums were held in Switzerland during 1923.[1] The first two were held on 18 February on protective custody and a federal resolution on relations with France over the former free trade area of Haute-Savoie.[1] The third was held on 15 April on a popular initiative "for the ensuring of people's rights in questions regarding tariffs", whilst the fourth was held on 3 June on amending articles 31 and 32bis of the constitution regarding alcohol.[1] All four were rejected by voters.[1] 
  Background
 The referendums on protective custody and tariffs were both popular initiatives,[1] which required a double majority; a majority of the popular vote and a majority of the cantons.[2] The decision of each canton was based on the vote in that canton.[2] Full cantons counted as one vote, whilst half cantons counted as half.[2] The referendum on relations with France was a "facultative referendum", which required only a simple majority of voters in favour,[2] whilst the referendum on amending the constitution was a mandatory referendum,[1] which also required a double majority.[2] 
 Results
 Protective custody
   | Choice  |  Popular vote  |  Cantons  | 
  | Votes  |  %  |  Full  |  Half  |  Total  | 
  | For |  55,145 |  11.0 |  0 |  0 |  0  | 
  | Against |  445,606 |  89.0 |  19 |  6 |  22  | 
  | Blank votes |  25,109 |  – |  – |  – |  –  | 
  | Invalid votes |  1,016 |  – |  – |  – |  –  | 
  | Total |  526,876 |  100 |  19 |  6 |  22  | 
  | Registered voters/turnout |  989,661 |  53.2 |  – |  – |  –  | 
  | Source: Nohlen & Stöver  | 
 Relations with France
   | Choice  |  Votes  |  %  | 
  | For |  93,982 |  18.5  | 
  | Against |  414,305 |  81.5  | 
  | Blank votes |  19,515 |  –  | 
  | Invalid votes |  1,024 |  –  | 
  | Total |  528,736 |  100  | 
  | Registered voters/turnout |  989,661 |  53.4  | 
  | Source: Nohlen & Stöver  | 
 Tariffs
   | Choice  |  Popular vote  |  Cantons  | 
  | Votes  |  %  |  Full  |  Half  |  Total  | 
  | For |  171,020 |  26.8 |  0 |  1 |  0.5  | 
  | Against |  467,876 |  73.2 |  19 |  5 |  21.5  | 
  | Blank votes |  10,813 |  – |  – |  – |  –  | 
  | Invalid votes |  1,450 |  – |  – |  – |  –  | 
  | Total |  651,159 |  100 |  19 |  6 |  22  | 
  | Registered voters/turnout |  990,202 |  65.8 |  – |  – |  –  | 
  | Source: Nohlen & Stöver  | 
 Constitutional amendments
   | Choice  |  Popular vote  |  Cantons  | 
  | Votes  |  %  |  Full  |  Half  |  Total  | 
  | For |  262,688 |  42.2 |  9 |  2 |  10  | 
  | Against |  360,397 |  57.8 |  10 |  4 |  12  | 
  | Blank votes |  11,931 |  – |  – |  – |  –  | 
  | Invalid votes |  1,575 |  – |  – |  – |  –  | 
  | Total |  636,591 |  100 |  19 |  6 |  22  | 
  | Registered voters/turnout |  985,774 |  64.6 |  – |  – |  –  | 
  | Source: Nohlen & Stöver  | 
 References
   - ^ a b c d e f Nohlen, D & Stöver, P (2010) Elections in Europe: A data handbook, p1909 ISBN 9783832956097 
  - ^ a b c d e Nohlen & Stöver, p1891