What remedies are available in the last instance?

The Code of Administrative Proceedings ofUkraine (as of 2013, in Ukrainian)

Source: http://zakon3.rada.gov.ua/laws/show/en/2747-15/page6

Article 177. 1. The court, having establisheda violation of the legislation on elections or a referendum, determines throughits judgment the way to protect the violated rights and interests, as well aselimination of all the consequences of these violations according to the law.In case of establishment of violations which can serve as grounds for initiatingprosecution according to the rules established other than this code, the courtcan adopt a separate decision indicating presence of such violations and cansend  the case to individuals orauthorities entitled by law to undertake actions with regard these violations.

Article 198. 1. Having considered the appealagainst the decision of the court of first instance the court of appellateinstance may:

1)reject the appeal and leave the ruling of the court of first instance unchanged- no changes;

2)change the ruling;

3)cancel the ruling of the first instance court and make a new one;

4)cancel the ruling and leave the claim without consideration or close theproceedings;

5)recognize the ruling invalid, terminating the proceedings in the case;