18. Is there a limit on the amount a donor can contribute to a candidate?

Organic Law No. 16 of 2014 of May 26, 2014, on Elections and Referenda as revised and completed by Organic Law No. 7 of 2017 dated February 14, 2017, and The Basic Law No. 76 of 2019 dated August 30, 2019,  Article 77:

Private funding means all cash or in-kind funding whose source is derived from outside the candidate list, candidate or party.

The campaign of a candidate list, candidate or party can only be funded by natural persons, with a maximum of twenty times the mandatory minimum wage per person for non-farming sectors in legislative elections, and thirty times in presidential elections and referendums, for each candidate list, candidate or party.