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The powers of the people’s deputies of Ukraine shall terminate with the termination of the powers of the Verkhovna Rada of Ukraine.  

The powers of a people’s deputy of Ukraine shall be subject to early termination in the event of:
(6) failure of the deputy elected as a member of a political party (an electoral block of parties) to join a deputy faction of such political party (an electoral block of parties) or the termination of the membership of such deputy in such faction; [...]
In case of a failure by a people’s deputy of Ukraine elected as a member of a political party (an electoral block of parties) to join a deputy faction of such political party (an electoral block of parties) or in case of termination of the membership of people’s deputy of Ukraine in such faction, the power of such deputy shall be subject to an early termination on the basis of a law by virtue of a decision of the supreme body of the relevant political party (an electoral block of parties) from the date of adoption of such decision.