5. Is there a ban on donations from Trade Unions to political parties?

Art. 24. "(1) Political parties may not receive: ... 2. any funds from any legal persons and from any sole traders; ... 

(2) Political parties may not receive any movable and immovable things for gratuitous use, nor any gratuitous services in any form whatsoever, from the entities referred to in Items 2, 3 and 4 of Paragraph (1)."

Source: Article 24 (1-2), The Political Parties Act, 2005

There is no explicit ban on trade unions making donations to the political parties, but there is a clear ban on legal persons. Since trade unions should be actually registered as legal persons, it may be concluded that this norm should apply to them as well.