 These parliaments legislated within the competences transferred to the provincial associations.The provincial diet of East Prussia elected a provincial executive body (government), the provincial committee ("Provinzialausschuss"), and a head of province, the "Landeshauptmann" ("Land Captain"; till the 1880s titled Landdirektor, land director).Summary of the East Prussian Provincial Diet direct election results
!colspan="2" align="left"|Parties
!%1921
!+/-1921
!Seats1921
!+/-1921
!%1925
!+/-1925
!Seats1925
!+/-1925
!%1929
!+/-1929
!Seats1929
!+/-1929
!%1933
!+/-1933
!Seats1933
!+/-1933
!colspan="2" align="left"|Parties
!%1921
!+/-1921
!Seats1921
!+/-1921
!%1925
!+/-1925
!Seats1925
!+/-1925
!%1929
!+/-1929
!Seats1929
!+/-1929
!%1933
!+/-1933
!Seats1933
!+/-1933
!colspan="2" align="left"|Total1921
!align="center" colspan="2"|
!align="center" colspan="1"|85
!colspan="2" align="left"|Total1925
!align="center" colspan="1"|87
!colspan="2" align="left"|Total1929
!align="center" colspan="1"|87
!colspan="2" align="left"|Total1933
!align="center" colspan="1"|87