The 1999 Brandenburg state election was held on 5 September 1999 to elect the members of the 3rd Landtag of Brandenburg. The incumbent Social Democratic Party (SPD) majority government led by Minister-President Manfred Stolpe lost its majority. The SPD subsequently formed a grand coalition with the Christian Democratic Union (CDU), and Stolpe continued as Minister-President.
Parties
The table below lists parties represented in the 2nd Landtag of Brandenburg.
Opinion polling
Election result
|-
! colspan="2" | Party
! Votes
! %
! +/-
! Seats
! +/-
! Seats %
|-
| bgcolor=|
| align=left | Social Democratic Party (SPD) | align=right| 433,521 | align=right| 39.3 | align=right| 14.8 | align=right| 37 | align=right| 15 | align=right| 41.6 |- | bgcolor=| | align=left | Christian Democratic Union (CDU) | align=right| 292,634 | align=right| 26.5 | align=right| 7.8 | align=right| 25 | align=right| 7 | align=right| 28.1 |- | bgcolor=| | align=left | Party of Democratic Socialism (PDS) | align=right| 257,309 | align=right| 23.3 | align=right| 4.6 | align=right| 22 | align=right| 4 | align=right| 24.7 |- | bgcolor=| | align=left | German People's Union (DVU) | align=right| 58,247 | align=right| 5.3 | align=right| 5.3 | align=right| 5 | align=right| 5 | align=right| 2.6 |- ! colspan=8| |- | bgcolor=| | align=left | Alliance 90/The Greens (Grüne) | align=right| 21,410 | align=right| 1.9 | align=right| 1.0 | align=right| 0 | align=right| ±0 | align=right| 0 |- | bgcolor=| | align=left | Free Democratic Party (FDP) | align=right| 20,472 | align=right| 1.9 | align=right| 0.3 | align=right| 0 | align=right| ±0 | align=right| 0 |- | bgcolor=| | align=left | Others | align=right| 18,767 | align=right| 1.7 | align=right| | align=right| 0 | align=right| ±0 | align=right| 0 |- ! align=right colspan=2| Total ! align=right| 1,102,360 ! align=right| 100.0 ! align=right| ! align=right| 89 ! align=right| 1 ! align=right| |- ! align=right colspan=2| Voter turnout ! align=right| ! align=right| 54.3 ! align=right| 2.0 ! align=right| ! align=right| ! align=right| |}