The Socialist United Party of Russia (USPR or SEPR; Russian: Социалистическая единая партия России; СЕПР; Sotsialisticheskaya yedinaya partiya Rossii, SEPR) was a socialist political party in Russia established in 2003, that succeeded the Spiritual Heritage movement. In the 2003 legislative elections it was part of the Rodina coalition that won 9.2 percent of the vote and 37 of the 450 seats in the Duma.