The 5th Sejm (lower house of the Polish legislature) was elected on 25 September 2005 at the 2005 Polish parliamentary election. The term lasted between 19 October 2005 and 4 November 2007, two years before mandatory end of its four year term, as the chamber decided to dissolve itself on 7 September 2007. The Marshal of the Sejm was elected on the second day of the first session, that is on 26 October 2006, thus Senior Marshal Józef Zych served for seven days.

Presidium

Composition

On 4 November 2007, at the end of the term, deputies were affiliated with the following parliamentary clubs (klub) and caucuses (koło):

Members of Sejm

mandates expired during the term of office