What information must signatories provide when signing the proposal?

Legal Regime governing Referenda (Law no. 15-A/98 of 3 April 1998, last amended by Organic Law no. 3/2017 of 18 July 2017)

Article 17: Form

1 – Popular initiatives shall be submitted in writing, on paper or by electronic means, shall be addressed to the Assembly of the Republic, and shall contain the signatories’ identity details, to comprise the full name, identity card or citizen’s card number, electoral number and date of birth of each one. [...]

Legislative Initiative by Citizens (Law no. 17/2003 of 4 June 2003, last amended by Law no. 52/2017 of 13 July 2017)

Article 6. Requisites

1 ‐ The right of citizens to initiate legislation is exercised by means of the submission to the Assembly of the Republic of Member’s bills subscribed by at least twenty thousand registered electors.

2 ‐ The Member’s bills referred to in the previous paragraph shall be submitted to the President of the Assembly of the Republic in writing, on paper or by electronic means, shall be drawn up in the form of articles and must contain: [...]

c) The identity details of all the proposers, on paper or by electronic means, depending on the format in which they are submitted, to comprise the full name, identity card or citizen’s card number, electoral number and date of birth of each subscribing citizen;

d) The identity details of the members who make up the committee representing the subscribing citizens, together with details of a domicile for the committee;