§ § 4Restrictions on activities of political parties

(1) Political parties whose objectives or activities are aimed at changing the constitutional order or territorial integrity of Estonia by force or are otherwise contrary to criminal law are prohibited.
(2) Organisations or alliances that possess weapons, are militarily organised or perform military exercises cannot operate as a political party or structural unit of a political party.
(3) Interference in the internal matters of a political party, except in special cases permitted by law, is prohibited.
(4) The formation and operation of political parties or their sub-units or of other political associations or their structural units of other states is prohibited within the territory under the jurisdiction of the Republic of Estonia.