Ciolacu called for transparency and urged the Central Electoral Bureau to allow civic organizations to observe the recount process in a Facebook post.
His decision follows the mandate of Romania's Constitutional Court to recount all ballots from the election on November 24 after allegations of fraud were raised by Cristian Terhes, a conservative candidate and a member of the European Parliament.
Despite announcing his withdrawal, Ciolacu, also leader of the Social Democratic Party (PSD), reaffirmed the PSD's focus on securing victory in the parliamentary elections scheduled for December 1, Xinhua news agency reported.