43. Are there limits on the amount that third parties can spend on election campaign activities?

74.1 [...] The following shall have the right to conduct pre-election and pre-referendum campaigns (hereinafter pre-election campaign):
74.1.1. Referendum campaign groups;
74.1.2. Candidates registered for participation in the elections of deputies to the Milli Majlis;
74.1.3. Candidates registered for participation in Presidential elections;
74.1.4. Political parties or blocs of political parties, which have candidates registered for participation in the elections of deputies to the Milli Majlis;
74.1.5. Candidates registered for participation in the municipal elections;
74.1.6. Political parties or blocs of political parties, which have candidates registered for participation in Presidential elections;
74.1.7. Political parties or blocs of political parties, which have candidates registered for participation in municipal elections.
Source: Article 74.1, Election Code of the Republic of Azerbaijan, 2003 (amended 2018).

There is no explicit ban on third parties participation in campaign activities, but the Election Code lists the entities allowed to conduct the campaign.