The Republic of Sercia is governed by a semi-presidential, unicameral, multi-party system. It is separated into the typical three branches of government. Its executive branch is led by an elected President who in turn appoints a Prime Minister who is responsible for most of the government's actual operations while the President acts mainly as a head of state. The role of the legislative branch is filled by the Seimas, a unicameral legislature of 71 members representing electoral districts. The judicial branch's highest authority is the Constitutional Court, whose members are proposed by the President and Chairman of the Seimas and voted on by the Seimas.
The Sercian political scene includes dozens of parties, but the most significant of these is the Liberal Democratic Party (Sercian: Liberalų Demokratų Partija), which claims direct lineage from MacPherson's independence movement. Overall they are a moderate liberal party advocating free trade and secular constitutional government and retain popularity due to their history although MacPherson retired from politics in 1994 after serving two terms as President.
The Union of Christian Democrats (Sercian: Krikščionių demokratų sąjungos) represents traditionalist Catholic interests and ranges from moderates who generally agree with the LDP on matters of policy to more socially conservative factions.
The Socialist Labor Party (Sercian: Socialistų darbininkų partija) is supported by Sercia's miners and shrinking base of manufacturing workers; it has failed to gain more widespread acceptance due to perceived similarities to the Front Party.
The Electoral Action of Yuktobanians in Sercia (Sercian: Sercios juktobanijos rinkimų akcija), initially formed to represent ethnic Yuke interests, morphed into the Front Party (Sercian: Fronto partija), a neo-Communist party whose hardliners advocate becoming a UYR Republic. As they lack broad appeal, they rarely win more than one Seimas seat.