The highest legislative authority in Poland, which is the first chamber of the Polish parliament. Consists of 460 deputies, elected in universal, equal, direct and proportional suffrage in a secret ballot.

The term of the Sejm lasts four years, starting from the day the newly elected Sejm convenes to the day preceding the convening of the next Sejm.

• The Constitution of the Republic of Poland of 2nd April 1997.
  Place of publication: (Dz. U. poz. 483, z późn. zm.)