Romania's pro-European parties agreed Wednesday to form a majority government made up of groupings that were traditionally on opposite sides and shutting out far-right nationalists who made significant gains in the election on Dec. 1.

Pro-Western parties won the most votes, with the leftist Social Democratic Party, or PSD, topping the polls. The PSD reached agreement late Tuesday to form a grand coalition with the center-right National Liberal Party, or PNL, the reformist Save Romania Union party, USR, and the small ethnic Hungarian UDMR party.