of Ukraine, appoints or confirms certain officials, appoints one-third of the Constitutional Court of Ukraine, ratifies and denounces international treaties, and exercises certain control functions. In Ukraine there are no requirements for the minimum number of signatures (of deputies) to register a bill. In general the parliament adopts about 200 bills per year. An average of five to six bills are registered daily in parliament. As a result of this in the spring of 2019 parliament had more than 10 thousand registered and under consideration bills it had yet to debate. All procedural regulations are contained in the Law on Regulations of the Verkhovna Rada of Ukraine. The latest version of the document was adopted on 16 December 2012, in which through the initiative of the President of Ukraine amendments were made concerning registration and voting by parliamentarians. 2012 became a year of numerous changes in regards to the document, among which were changes to the election of the chairman. Bills are usually considered following the procedure of three readings; the President of Ukraine must sign a law before it can be officially promulgated. Until 2017 the parliament appointed and dismissed judges from their posts and permitted detention or arrest of judges (those powers were transferred to the Supreme Council of Justice). Composition The Verkhovna Rada is a unicameral legislature with 450 people's deputies () elected on the basis of equal and direct universal suffrage through a secret ballot. Parliamentary factions, groups, and parties All members of parliament are grouped into parliamentary factions and groups. Members of parliament who were elected from a certain party list are not necessarily members of that party. Parties that break the 5% electoral threshold form factions in the parliament. The formation of official parliamentary factions is regulated by the Verkhovna Rada's rules and procedures. Only 15 or more deputies may form a parliamentary faction and an MP may be a member of only one faction at a time. The chairman and his two vice-chairmen may not be the heads of factions. Under current parliamentary rules a faction of non-partisan politicians can not be smaller than the smallest faction of a political party. Deputies who are expelled from factions or decide to leave them to become individual lawmakers; individual deputies are allowed to unite into parliamentary groups of people's deputies that again have at least 15 deputies. Several influential parties have been founded after originally