3. Is there a ban on corporate donations to political parties?

Latvia
Answer
Yes
Source
Section 4, Law on Financing of Political Organisations (Parties), the amended version of the law in force from 01.01.2020, Latvijas Vēstnesis, 114, 02.08.1995
Comment
With the amendment in force from 12.03.2004, all donations from legal persons are banned.