To avoid these shortcomings, boundary delimitation should take place in a transparent and consistent manner, established by a law that also regulates the frequency of reviewing boundaries.^[29] The Venice Commission has repeatedly recommended that “[t]he procedure for delimiting electoral districts should be defined precisely in a law, so that the process remains the same, regardless of who is drawing the district boundaries.”^[30] In this regard, the existence of legal restrictions to discretionary powers act as an important legal safeguard against arbitrariness and guarantee the Rule of Law.^[31] In the field of constituency delimitation, a way to prevent such an abuse is, where possible, to make constituency boundaries coincide with administrative boundaries, while geographical and historic criteria may be taken into account.^[32] Should the delimitation of constituencies remain in the hands of the legislator – as is currently the case in Hungary, limitations to its discretion should be defined at a level higher than the law determining the constituency boundaries.