in respect of a violation of the provisions on voting rights in terms of Articles 2–4, Article 5 paragraphs 3 and 6 and Articles 62 and 63 (appeal on a matter related to voting rights);
in respect of irregularities at popular votes (appeal on a matter related to popular votes);
c.
in respect of irregularities in the preparation for and conduct of elections to the National Council (appeal on a matter related to elections).
2 The appeal must be filed by registered mail within three days of the grounds for appeal being ascertained, and at the latest on the third day following publication of the results in the official cantonal gazette.159