Quote

"Only convincing and compelling reasons can justify limitations on the freedom of association of political parties, and such limitations must be construed strictly. Any such limitations must be prescribed by law, pursue a legitimate aim recognized by international standards, necessary in a democratic society, and proportionate in measure and duration."

Document

OSCE (ODIHR), CoE (Venice Commission): Guidelines on Political Party Regulation, Second Edition, para. 36

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Guidelines on Political Party Regulation, Second Edition

English

Summaries

Demands on political parties regarding registration should not be so stringent as to jeopardize their freedom of association.
States should legally recognize political parties for the effective exercise of related civil and political rights.