Last instance body dealing with electoral disputes

Greece

Answer

There is only one level of adjudication

Source

Constitution

Article 58

The hearingof objections rose against the validity of parliamentary elections and theirverification concerning either electoral violations related to the conduct ofthe elections, or the lack of legal qualifications, is assigned to the SupremeSpecial Court of article 100.

Article 100
1. A SpecialHighest Court shall be established, the jurisdiction of which shall comprise:
a) The trial of objections in accordance with article 58.
[…]

3. The organization and functioning of theCourt, the appointment, replacement of and assistance to its members, as wellas the procedure to be followed shall be determined by special statute.

The judgmentsof this Court shall be irrevocable.

http://www.hellenicparliament.gr/UserFiles/f3c70a23-7696-49db-9148-f24dce6a27c8/PD%2026-2012.pdf