Kravanja | align=left| Social Democratic Party | 13,101 | 49.3 | 11,640 | 66.7 |- | bgcolor=| | align=left| Oliver Lind | align=left| Christian Democratic Union | 6,674 | 25.1 | 5,823 | 33.3 |- | | align=left| Manfred Fiedler | align=left| The Greens/FWI/The Left | 4,422 | 16.6 |- | bgcolor=| | align=left| Mario Rommel | align=left| Independent | 1,213 | 4.6 |- | bgcolor=| | align=left| Nils Bettinger | align=left| Free Democratic Party | 1,160 | 4.4 |- ! colspan=3| Valid votes ! 26,570 ! 98.7 ! 17,463 ! 98.8 |- ! colspan=3| Invalid votes ! 359 ! 1.3 ! 210 ! 1.2 |- ! colspan=3| Total ! 26,929 ! 100.0 ! 17,673 ! 100.0 |- ! colspan=3| Electorate/voter turnout ! 60,039 ! 44.9 ! 60,007 ! 29.5 |- | colspan=7| Source: City of Castrop-Rauxel (1st round, 2nd round) |} List of mayors Lord Mayors 1926–1933: Mende, Centre Party (Germany) (Mayor, from 1928 Lord Mayor) 1933–1945: Richard Anton, NSDAP 1945–1946: Arnold Boerboom 1946–1948: Hubert Krehe, CDU 1948–1971: Wilhelm Kauermann, SPD 1971–1975: Hugo Paulikat, SPD Mayors 1975–1989: Hugo Paulikat, SPD 1989–1999: Hans Ettrich, SPD 1999–2004: Nils Kruse, CDU 2004–2015: Johannes Beisenherz, SPD since 2015: Rajko Kravanja, SPD City council The Castrop-Rauxel city council governs the city alongside the Mayor. The most recent city council election was held on 13 September 2020, and the results were as follows: ! colspan=2| Party ! Votes ! % ! +/- ! Seats ! +/- |- | bgcolor=| | align=left| Social Democratic Party (SPD) | 10,256 | 38.9 | 1.3 | 20 | ±0 |- | bgcolor=| | align=left| Christian Democratic Union (CDU) | 7,059 | 26.8 | 3.9 | 14 | 1 |- | bgcolor=| | align=left| Alliance 90/The Greens (Grüne) | 3,988 | 15.1 | 7.1 | 8 | 4 |- | | align=left| Independent Citizens' Party (UBP) | 1,146 | 4.3 | 0.3 | 2 | ±0 |- | | align=left| Free Voter Initiative (FWI) | 1,132 | 4.3 | 3.2 | 2 | 2 |- | bgcolor=| | align=left| The Left (Die Linke) | 1,021 | 3.9 | 1.4 | 2 | 1 |- | bgcolor=| | align=left| Free Democratic Party (FDP) | 1,014 | 3.8 | 0.5 | 2 | ±0 |- | bgcolor=| | align=left| Die PARTEI | 775 | 2.9 | New | 2 | New |- ! colspan=2| Valid votes ! 26,391 ! 98.2 ! !