Refusals of candidate registration should be mostly challenged by prospective candidates. While they are directly impacted by a possible refusal of registration, this also impacts the freedom of voters to form an opinion and ultimately to express their wishes if candidates from some political colours are not present in the political arena. Therefore, it would be an improvement for the transparency and the pluralism of electoral processes to allow voters to challenge refusals of candidate registration in other countries than the 12 identified by the report.