Run-off elections were held on 24 October in the single-seat constituencies where no candidate secured a seat in the first round.

In April 2006 the parliament expressed no confidence in the Speaker and Paulauskas was forced to resign, taking New Union out of the coalition.

[1] Viktoras Muntianas resigned as the Speaker of the Seimas after a corruption scandal in April 2008 and Česlovas Juršėnas was elected in his stead.

During the first session of the Seimas the following parliamentary groups were registered: Social Democratic Party of Lithuania (LSDPF), Labour Party (DPF), Liberal and Centre (LCSF), Liberal Democrats (LDF), New Union (NSF), Homeland Union (TSF), Peasant and New Democracy (VNDF, later VLF) and the Mixed Group of Members of the Seimas (MSNG).

The term of the Seimas was noted for particularly significant shifts among parliamentary groups.