[2] According to a dispatch from the British Embassy in Lisbon, prior to the referendum: "Generally speaking, this novel constitution is receiving the marked approval which it deserves.

[6] It institutionalised the Estado Novo one party state led by António de Oliveira Salazar, and provided for a directly elected President and National Assembly with a four-year term.

[9] Hugh Kay provides, in 1970, 719,364 favour; 5,955 against; 488,840 abstentions in a registered electorate of 1,214,159, in line with the results published in the Diário de Notícias of 20 March 1933.

[10] Fryer and McGowan Pinheiro state that the Constitution was railroaded through not letting more than a handful of people vote "no" but the authors do not explain how the potential "no" voters were restrained.

[1] Hugh Kay points out that abstention might have been because voters were presented with a package deal to which they had to say "yes" or "no" with no opportunity to accept one clause and reject the other.