17. If there is a limit on the amount a donor can contribute to a political party during an election, what is the limit?

Ecuador
Answer
There is a limit for donation related to a campaign for natural persons: no more than 5% of the highest among of election expenses authorized for each position.
Source
Ley Orgánica Electoral, Código de la Democracia: Art. 221.- La aportación de las personas naturales no podrá exceder del cinco por ciento del monto máximo de gasto electoral autorizado, para cada dignidad. (…)