Article 92 of the Spanish Constitution of 1978 reads:

" 1. Political decisions of special importance may be submitted to all
     citizens in a consultative referendum.

  2. The referemdum shall be called by the King on the proposal of the
     President of Government, following authorization by the Congress of
     Deputies.

  3. An organic law shall regulate the terms and procedures for the
     different kinds of referendum provided for in the Constitution."

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National referenda since the Political Reform Bill:
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Political Reform: December 15th, 1976
                  Electorate: 22,632,180
                  Voters:     17,599,562
                  % Voters:       77.8*
                  % Abstentions:  22.2*
                  (*) Percentage of the total electorate.

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Constitution: December 6th, 1978
              Electorate: 26,632,180
              Voters:     17,873,301
              % Voters:       67.1*
              % Abstentions:  32.9*
              (*) Percentage of the total electorale.

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Remaining in the Atlantic Alliance: March 12th, 1986
                                    Electorate: 29,025,494
                                    Voters:     17,246,756
                                    % Voters:       59.4*                   
                                    % Abstentions:  40.3* 
                                    (*) Percentage of the total electorate.

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