 In 2013, Predoiu became a member of the PDL, being named the First Vice President and Shadow Prime Minister of the party.Following the alliance of PDL and PNL, National-Liberal presidential candidate Klaus Iohannis expressed his support for Predoiu as prime-minister.In 2014, following the merger between PDL and PNL, he became First Vice President of PNL until an unification Congress in the summer of 2017.