The PD is followed by the Social Democratic Party, the largest opposition and also the largest party in Romania's national parliament with 21.1 percent while the ruling National Liberal Party (PNL) with 15.6 percent.
The Liberal Democratic Party (PLD) obtained 6.9 percent, followed by the Hungarian Democratic Union of Romania (UDMR) with 6.2 percent. The other eight parties in the race for the European Parliament did not pass the 5 percent electoral threshold needed to enter the seat distribution stage.
"We are the most powerful party in Romania," said the PD leader Emil Boc, stressing that the party's supporting share in the population has increased.
The elections are the first ever held in Romania after the eastern European country entered the EU on Jan. 1, 2007. The total number of Romanian citizens who are eligible to vote is around 18.26 million and a low turnout in the election has been recorded.
As many as 17,340 polling stations are open between 7 a.m. and 9 p.m. throughout Romania for the elections. Thirteen parties have entered the race for the European Parliament.