Five referendums were held in Switzerland in 1970.[1] The first was held on 1 February on a federal resolution on the domestic sugar market, and was approved by voters.[2] The second was held on 7 June on a popular initiative "against foreign infiltration", and was rejected by voters.[3] The third and fourth were held on 27 September on an amendment to the Swiss Federal Constitution regarding promoting gymnastics and sports, which was approved, and a popular initiative on the "right to habitation and expansion of family protection", which was rejected.[3] The fifth was held on 15 November on an amendment to the federal financial order, which was rejected due to not enough cantons voting in favour.[1] 
  Results
 February: Domestic sugar market
   | Choice | Votes | % | 
  | For | 380,023 | 54.2 | 
  | Against | 320,653 | 45.8 | 
  | Blank votes | 13,615 | – | 
  | Invalid votes | 1,195 | – | 
  | Total | 715,486 | 100 | 
  | Registered voters/turnout | 1,634,975 | 43.8 | 
  | Source: Nohlen & Stöver | 
 June: Popular initiative against foreign infiltration
   | Choice | Popular vote | Cantons | 
  | Votes | % | Full | Half | Total | 
  | For | 557,517 | 46.0 | 6 | 2 | 7 | 
  | Against | 654,844 | 54.0 | 13 | 4 | 15 | 
  | Blank votes | 11,740 | – | – | – | – | 
  | Invalid votes | 2,557 | – | – | – | – | 
  | Total | 1,226,658 | 100 | 19 | 6 | 22 | 
  | Registered voters/turnout | 1,641,777 | 74.7 | – | – | – | 
  | Source: Nohlen & Stöver | 
    | Choice | Popular vote | Cantons | 
  | Votes | % | Full | Half | Total | 
  | For | 524,361 | 74.6 | 19 | 6 | 22 | 
  | Against | 178,283 | 25.4 | 0 | 0 | 0 | 
  | Blank votes | 17,658 | – | – | – | – | 
  | Invalid votes | 1,081 | – | – | – | – | 
  | Total | 721,383 | 100 | 19 | 6 | 22 | 
  | Registered voters/turnout | 1,648,062 | 43.8 | – | – | – | 
  | Source: Nohlen & Stöver | 
 September: Popular initiative on housing
   | Choice | Popular vote | Cantons | 
  | Votes | % | Full | Half | Total | 
  | For | 344,640 | 48.9 | 7 | 2 | 8 | 
  | Against | 359,818 | 51.1 | 12 | 4 | 14 | 
  | Blank votes | 16,420 | – | – | – | – | 
  | Invalid votes | 1,192 | – | – | – | – | 
  | Total | 722,070 | 100 | 19 | 6 | 22 | 
  | Registered voters/turnout | 1,648,062 | 43.8 | – | – | – | 
  | Source: Nohlen & Stöver | 
 November: Financial order
   | Choice | Popular vote | Cantons | 
  | Votes | % | Full | Half | Total | 
  | For | 366,117 | 55.4 | 8 | 2 | 9 | 
  | Against | 294,965 | 44.6 | 11 | 4 | 13 | 
  | Blank votes | 19,658 | – | – | – | – | 
  | Invalid votes | 1,355 | – | – | – | – | 
  | Total | 682,095 | 100 | 19 | 6 | 22 | 
  | Registered voters/turnout | 1,665,753 | 40.9 | – | – | – | 
  | Source: Nohlen & Stöver | 
 References
   - ^ a b Nohlen, D & Stöver, P (2010) Elections in Europe: A data handbook, pp1919–1920 ISBN 9783832956097 
- ^ Nohlen & Stöver, p1919 
- ^ a b Nohlen & Stöver, p1920