41. Are there limits on the amount a candidate can spend?

ELECTIONS LAW – LAW N. 9,504 OF SEPTEMBER 30th, 1997.

Article 17. The expenses related to electoral campaigns shall be incurred by the parties or their candidates and shall be funded as provided for in this Law.
Article 17-A. The limit to campaign spending aimed at filling public elective offices shall be established by law, in observance to local peculiarities, by June 10 of each electoral year; in case such law is not timely published, each political party shall establish their respective spending limits and report them to the Electoral Justice, which shall ensure broad publicity to such information. 

(...) Article 18. Political parties and coalitions shall include in the registration requests for their candidates, which are to be submitted to their respective Electoral Courts, the maximum amounts to be spent in the campaigns for each elective office in each election, making sure to comply with the limits established pursuant to the provisions set forth in Article 17-A of this Law. (...)Paragraph 1. With respect to coalitions, each member party shall establish the maximum amount referred to in this article.
Paragraph 2. In case expenditures exceed the amounts established pursuant to the provisions set forth in this article, the responsible party or coalition shall be subject to the application of a fine ranging from five to ten times the sum overspent.