Following the reduced number of seats in Parliament by way of the 2011 reform, the redrawing of the single-mandate electoral constituencies was necessary. But as the Venice Commission and ODIHR already mentioned in their 2012 Opinion,[40] redrawing of electoral constituencies was essential even before the electoral reform, as underlined by the Constitutional Court of Hungary in 2005 and 2010[41] and by the ODIHR Election Assessment Mission Report on the 11 April 2010 parliamentary elections,[42] which drew attention to significant deviations in the sizes of constituencies during the 2010 parliamentary elections, in contradiction with the fundamental principle of equality.