Russian Prime Minister Dmitry Medvedev's United Russia party has won by a landslide the elections held in the country on Sunday, but has lost some support, exit polls have suggested.

Early poll results have shown the same four parties that made up the current Russian legislation in 2011 will have MPs in the 450-seat Parliament, daily Kommersant reports.

With voter support at 44.7%, United Russia will have polled worse than in 2011 (49.32%) if the data is confirmed.

Second comes the Liberal Democratic Party of Russia (LDPR), trailing far behind United Russia, at 15.3%. Vladimir Zhirinovsky's party is thus projected to improve its performance of 2011, when it was fourth with 11.67% of the vote.

The Communist party (KPRF) will be the third-largest political force (14.9%), compared to 19.19% in the previous legislative elections.

A Just Russia will be fourth, having garnered 8.1%. In 2011, it got 13.24% of support.

Yabloko, the liberal party that placed high hopes on passing the 7% threshold to enter Parliament, is poised to get 3.4% (and thus be able to receive state subsidies per vote), according to the polls. If confirmed, its standing will not differ from the one in 2011, when it got 3.43% of the vote.