Oprescu's campaign will be coordinated by Octav Cozmanca and the former social-democrat deputy Alin Teodorescu.
President Traian Basescu announced two days ago he will candidate for another mandate at the country's helm.
The leader of the Social-Democrat Party (PSD), Mircea Geoana, will also run for the president seat, next to the liberal Crin Antonescu and football tycoon Gigi Becali.