The figures so far indicated neither party would be able to form a majority government and would have to seek a coalition partner.
The far-right nationalist Greater Romania party received about 13 percent, and the ethnic Hungarian Party just under 7 percent.
In the presidential race, Prime Minister Adrian Nastase won almost 41 percent and his main challenger Traian Basescu under 34 percent, setting the stage for a runoff vote on 12 December.
The opposition has alleged fraud. The Organization for Security and Cooperation in Europe (OSCE) said the vote was well organized and executed but called on the authorities to investigate reports of mulitiple voting.