Parliamentary groups

During the first session of the Seimas the following parliamentary groups were registered: Homeland Union - Lithuanian Conservatives, Christian Democrats, Center, Democratic Labour Party of Lithuania, Social Democrats, Joint Group (Joint Group of the Peasants' party, the Christian Democratic Union and the National Party "Young Lithuania"), Independent Group and the Mixed Group of Members of the Seimas.

Several splits occurred during the term. In late 1998 Laima Andrikienė and Vidmantas Žiemelis were ejected from Homeland Union - Lithuanian Conservatives. They were followed by another 10 parliament members who formed the parliamentary group of Moderate Conservatives in 2000. In the same year, Modern Christian Democrats (4 members) split from the Christian Democrats and Social Democracy 2000s (4 members at the time) split from the Social Democrats. However, similarly to the Sixth Seimas, the Seventh Seimas saw few defections across ideological borders, due to the vast gulf between ruling and opposition parties.^[2]: 354

By the end of the term of the Seimas, the following parliamentary groups were active.^[3]

Members

A total of 151 members were elected to the Seventh Seimas (Virgilijus Bulovas and Naglis Puteikis were elected but did not take their seats),^{[4][2]: 348} including 126 men and 25 women.^[5] Seimas had 137 members at the end of the term, as no new elections would take place in single-seat constituencies with less than 6 months of the term left.^{[2]: 348–349}