[6] March 15, 2014 Vadym Merikov received the powers of the people's deputy of Ukraine after the Verkhovna Rada (Ukraine's parliament) terminated the powers of the people's deputies Arseniy Yatsenyuk and Stepan Kubiv, who received positions in the Cabinet of Ministers.

629 of the President of Ukraine, Vadym Marikov was appointed Governor of Mykolaiv Oblast by Petro Poroshenko.

[9][10] In mid-August 2014, the media, citing sources in the Security Service of Ukraine, reported the detention of a group of five people who were preparing to assassinate Governor Merikov and his family.

According to the siloviki, it is connected with the Donetsk People's Republic, whose interaction with its Mykolaiv like-minded officials previously opposed.

[15] In October 2017, Vadym Merikov initiated and supported the third Investment Forum “Mykolaiv Region - a Reliable Partner”.