The Serbian Radical Party (Serbian: Српска радикална странка, Srpska radikalna stranka) is a political party in Serbia. It has existed since the 19th century, but the current incarnation was formed after a split in the Serbian Renewal Movement in 1990. It supports the idea of a Greater Serbia and is openly sympathetic to the Chetniks.

During the 1990s it was an ally of the Socialist Party of Serbia. Its leader, Vojislav Šešelj is awaiting trial at the Yugoslav War Crimes Tribunal at the Hague.

At the 2003 general elections, it picked up a plurality of seats and votes, with 27% share and 81 of 250 seats.

Its electoral success may be attributed to two factors: promising economic reforms to help people who are facing tough times, and perhaps picked up support from the Socialist Party of Serbia, whose share of the vote and seats actually dropped.

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