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Estonia - Supreme Court
Finland - Supreme Court / Supreme Administrative Court
France - Constitutional Council
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Hungary - Constitutional Court
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Latvia - Constitutional Court
Lithuania - Constitutional Court
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Poland - Constitutional Tribunal
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Spain - Constitutional Court
The former Yugoslav Republic of Macedonia - Constitutional Court
Turkey - Constitutional Court
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National parliaments

Albania
Austria
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Croatia
Cyprus
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Denmark
Estonia
Finland
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Greece
Hungary
Ireland
Italy
Latvia
Lithuania
Luxembourg
Malta
Montenegro
Netherlands
Poland - Diet / Senate
Portugal
Romania - House of Deputies / Senate
Serbia
Slovakia
Slovenia - National Assembly / National Council
Spain - Congress of Deputies / Senate
Sweden
The Former Yugoslav Republic of Macedonia
Turkey
United Kingdom