Polish legislative election, 2005

Polish parliamentary election, 2005

← 2001 25 September 2005 2007 →
All 460 seats in the Sejm 231 seats were needed for a majority in the Sejm All 100 seats in the Senate
Turnout	40.57%
First party Second party Third party   Leader Jarosław Kaczyński Donald Tusk Andrzej Lepper Party PiS PO SRP Leader since 18 January 2003 1 June 2003 10 January 1992 Leader's seat 19 – Warsaw I 25 – Gdansk 40 – Koszalin Last election 44 seats, 9.5% 65 seats, 12.7% 53 seats, 10.2% Seats won 155 133 56 Seat change 111 68 3 Popular vote 3,185,714 2,849,269 1,347,355 Percentage 27.0% 24.1% 11.4% Swing 17.5% 11.4% 1.2%   Fourth party Fifth party Sixth party   Leader Wojciech Olejniczak Roman Giertych Waldemar Pawlak Party SLD LPR PSL Leader since 29 May 2005 21 April 2001 29 January 2005 Leader's seat 11 – Sieradz 19 – Warsaw I 16 – Płock Last election 216 seats, 41% 38 seats, 7.9% 42 seats, 9% Seats won 55 34 25 Seat change 161 4 17 Popular vote 1,335,257 940,762 821,656 Percentage 11.3% 8.0% 7.0% Swing 29.7% 0.1% 2%   Seventh party   Leader Henryk Kroll Party MN Leader since 27 October 1991 Leader's seat 21 – Opole Last election 2 seats, 0.4% Seats won 2 Seat change Popular vote 34,469 Percentage 0.3% Swing 0.1%
Powiats won by ■ – Civic Platform ■ – Law and Justice ■ – Polish People's Party ■ – Democratic Left Alliance ■ – Self-Defense ■ – German Minority
Prime Minister before election Marek Belka SLD New Prime Minister Kazimierz Marcinkiewicz PiS

■ – Civic Platform ■ – Law and Justice
■ – Polish People's Party ■ – Democratic Left Alliance
■ – Self-Defense

Marek Belka
SLD

Kazimierz Marcinkiewicz
PiS

Parliamentary elections were held in Poland on 25 September 2005. Thirty million voters were eligible to vote for all 460 members of the lower house, the Sejm and all 100 members of the upper house, the Senate.

The election resulted in a sweeping victory for two parties of the centre-right, the conservative Law and Justice (PiS) and the liberal-conservative Civic Platform (PO). The incumbent center-left government of the Democratic Left Alliance (SLD) was soundly defeated in a landslide. The two victorious parties won 288 out of the 460 seats, while the SLD was reduced to 55 seats. The PiS won 155 seats, while PO obtained 133. PiS leader, Jarosław Kaczyński, declined the opportunity to become Prime Minister in order not to prejudice his twin brother Lech Kaczyński's chances for the presidential election held later in October. In his place, Law and Justice instead nominated Kazimierz Marcinkiewicz for the post. The outgoing Prime Minister, Marek Belka, lost his seat.

In the Senate, PiS won 49 seats and PO 34 of the 100 seats, leaving eight other parties with the remaining 17 seats. The SLD won no seats in the Senate.