# Leverkusen – Cologne IV

Leverkusen – Cologne IV (German: Leverkusen – Köln IV) is an electoral constituency (German: Wahlkreis) represented in the Bundestag. It elects one member via first-past-the-post voting. Under the current constituency numbering system, it is designated as constituency 100. It is located in western North Rhine-Westphalia, comprising the city of Leverkusen and the northeastern part of Cologne.
Leverkusen – Cologne IV was created for the 2002 federal election. Since 2005, it has been represented by Karl Lauterbach of the Social Democratic Party (SPD).

## Geography

Leverkusen – Cologne IV is located in western North Rhine-Westphalia. As of the 2021 federal election, it comprises the independent city of Leverkusen and the district of Mülheim from the independent city of Cologne.

## History

Leverkusen – Cologne IV was created in 2002 and contained parts of the abolished constituencies of Leverkusen – Rheinisch-Bergischer Kreis II and Köln IV. In the 2002 through 2009 elections, it was constituency 102 in the numbering system. In the 2013 through 2021 elections, it was number 101. From the 2025 election, it has been number 100.

## Members

The constituency was first represented by Ernst Küchler of the Social Democratic Party (SPD) from 2002 to 2005. He was succeeded by fellow SPD member Karl Lauterbach in the 2005 election. Lauterbach was re-elected in 2009, 2013, 2017, 2021, and 2025.
| Election | Member | Party | % |
| 2002 | Ernst Küchler | SPD | 50.0 |
| 2005 | Karl Lauterbach | SPD | 48.6 |
| 2009 | Karl Lauterbach | SPD | 37.1 |
| 2013 | Karl Lauterbach | SPD | 41.3 |
| 2017 | Karl Lauterbach | SPD | 38.7 |
| 2021 | Karl Lauterbach | SPD | 45.6 |
| 2025 | Karl Lauterbach | SPD | 32.7 |

## Election results
### 2025 election

Federal election (2025): Leverkusen – Cologne IV :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | SPD | Y Karl Lauterbach | Y Karl Lauterbach | 53,574 | 32.7 | 12.9 | 34,871 | 21.2 | 7.9 |
| | CDU | Siegmar Heß | Siegmar Heß | 41,855 | 25.6 | 5.1 | 40,450 | 24.6 | 2.9 |
| | AfD | Yannick Noe | Yannick Noe | 25,439 | 15.5 | 8.5 | 25,392 | 15.5 | 8.3 |
| | Greens | Nyke Slawik | Nyke Slawik | 18,081 | 11.0 | 0.3 | 23,355 | 14.2 | 5.0 |
| | Left | Vedat Akter | Vedat Akter | 14,848 | 9.1 | 5.4 | 19,137 | 11.6 | 6.9 |
| | BSW | | | | | | 7,786 | 4.7 | |
| | FDP | Rolf Albach | Rolf Albach | 5,102 | 3.1 | 4.1 | 6,418 | 3.9 | 6.5 |
| | Volt | Friedrich Jeschke | Friedrich Jeschke | 2,558 | 1.6 | | 1,475 | 0.9 | 0.2 |
| | Tierschutzpartei | | | | | | 2,106 | 1.3 | 0.1 |
| | FW | Jörg Badura | Jörg Badura | 1,984 | 1.2 | 0.2 | 695 | 0.4 | 0.2 |
| | PARTEI | | | | | 1.8 | 1,100 | 0.7 | 0.7 |
| | Team Todenhöfer | | | | | | 409 | 0.2 | 0.8 |
| | dieBasis | | | | | 1.5 | 364 | 0.2 | 0.9 |
| | MLPD | Reiner Dworschak | Reiner Dworschak | 330 | 0.2 | 0.1 | 117 | 0.1 | 0.0 |
| | PdF | | | | | | 287 | 0.2 | 0.1 |
| | BD | | | | | | 169 | 0.1 | |
| | Values | | | | | | 103 | 0.1 | |
| | MERA25 | | | | | | 100 | 0.1 | |
| | Pirates | | | | | | | | 0.4 |
| | Gesundheitsforschung | | | | | | 216 | 0.1 | 0.1 |
| | Humanists | | | | | | | | 0.1 |
| | ÖDP | | | | | | | | 0.1 |
| | Bündnis C | | | | | | | | 0.1 |
| | SGP | | | | | | | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,595 | | | 1,032 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 163,771 | | | 163,334 | | |
| Turnout | Turnout | Turnout | Turnout | 165,366 | 80.2 | 6.4 | | | |
| | SPD hold | SPD hold | Majority | 11,719 | 7.1 | | | | |

### 2021 election

Federal election (2021): Leverkusen – Cologne IV :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | SPD | Y Karl Lauterbach | Y Karl Lauterbach | 69,662 | 45.6 | 6.9 | 44,586 | 29.1 | 2.0 |
| | CDU | Serap Güler | Serap Güler | 31,197 | 20.4 | 10.4 | 33,246 | 21.7 | 6.4 |
| | Greens | Nyke Slawik | Nyke Slawik | 17,290 | 11.3 | 5.6 | 29,329 | 19.2 | 10.4 |
| | FDP | Cornelia Besser | Cornelia Besser | 11,050 | 7.2 | 0.6 | 15,931 | 10.4 | 1.8 |
| | AfD | Christer Cremer | Christer Cremer | 10,797 | 7.1 | 1.7 | 10,966 | 7.2 | 2.6 |
| | Left | Beate Hane-Knoll | Beate Hane-Knoll | 5,657 | 3.7 | 2.4 | 7,318 | 4.8 | 4.5 |
| | Tierschutzpartei | | | | | | 2,081 | 1.4 | 0.6 |
| | PARTEI | Frauke Petzold | Frauke Petzold | 2,782 | 1.8 | 0.8 | 2,076 | 1.4 | 0.0 |
| | dieBasis | Dirk Sattelmaier | Dirk Sattelmaier | 2,222 | 1.5 | | 1,715 | 1.1 | |
| | Team Todenhöfer | | | | | | 1,669 | 1.1 | |
| | Volt | | | | | | 996 | 0.7 | |
| | FW | Stephan Heintze | Stephan Heintze | 1,479 | 1.0 | | 918 | 0.6 | 0.4 |
| | Pirates | | | | | | 664 | 0.4 | 0.1 |
| | Independent | Jacqueline Blum | Jacqueline Blum | 412 | 0.3 | | | | |
| | Gesundheitsforschung | | | | | | 216 | 0.1 | 0.1 |
| | LIEBE | | | | | | 195 | 0.1 | |
| | LfK | | | | | | 149 | 0.1 | |
| | V-Partei3 | | | | | | 139 | 0.1 | 0.0 |
| | Humanists | | | | | | 124 | 0.1 | 0.0 |
| | NPD | | | | | | 123 | 0.1 | 0.1 |
| | ÖDP | | | | | | 112 | 0.1 | 0.0 |
| | Bündnis C | | | | | | 100 | 0.1 | |
| | du. | | | | | | 98 | 0.1 | |
| | MLPD | Jonathan Meier | Jonathan Meier | 212 | 0.1 | 0.1 | 96 | 0.1 | 0.1 |
| | PdF | | | | | | 57 | 0.0 | |
| | LKR | | | | | | 36 | 0.0 | |
| | DKP | | | | | | 36 | 0.0 | 0.0 |
| | SGP | | | | | | 24 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,403 | | | 1,163 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 152,760 | | | 153,000 | | |
| Turnout | Turnout | Turnout | Turnout | 154,163 | 73.7 | 0.6 | | | |
| | SPD hold | SPD hold | Majority | 38,465 | 25.2 | 17.3 | | | |

### 2017 election

Federal election (2017): Leverkusen – Cologne IV :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | SPD | Y Karl Lauterbach | Y Karl Lauterbach | 59,373 | 38.7 | 2.7 | 41,671 | 27.1 | 5.6 |
| | CDU | Helmut Nowak | Helmut Nowak | 47,272 | 30.8 | 8.5 | 43,175 | 28.1 | 7.5 |
| | AfD | Günter Theodor Witzmann | Günter Theodor Witzmann | 13,408 | 8.7 | | 14,970 | 9.7 | 5.8 |
| | FDP | Rolf William Albach | Rolf William Albach | 10,114 | 6.6 | 4.3 | 18,719 | 12.2 | 7.3 |
| | Left | Beate Hane-Knoll | Beate Hane-Knoll | 9,430 | 6.1 | 0.4 | 14,284 | 9.3 | 2.1 |
| | Greens | Lisa-Marie Friede | Lisa-Marie Friede | 8,722 | 5.7 | 1.5 | 13,472 | 8.8 | 0.9 |
| | PARTEI | Mark Benecke | Mark Benecke | 3,990 | 2.6 | 1.6 | 2,102 | 1.4 | 0.7 |
| | Tierschutzpartei | | | | | | 1,153 | 0.8 | |
| | AD-DEMOKRATEN | | | | | | 1,007 | 0.7 | |
| | Independent | Daniel Werner | Daniel Werner | 861 | 0.6 | | | | |
| | Pirates | | | | | | 774 | 0.5 | 2.1 |
| | FW | | | | | | 373 | 0.2 | 0.2 |
| | NPD | | | | | | 352 | 0.2 | 0.8 |
| | DiB | | | | | | 265 | 0.2 | |
| | MLPD | Ernst Albert Herbert | Ernst Albert Herbert | 350 | 0.2 | 0.0 | 207 | 0.1 | 0.0 |
| | V-Partei³ | | | | | | 194 | 0.1 | |
| | Volksabstimmung | | | | | | 192 | 0.1 | 0.1 |
| | BGE | | | | | | 176 | 0.1 | |
| | DM | | | | | | 164 | 0.1 | |
| | ÖDP | | | | | | 155 | 0.1 | 0.0 |
| | Gesundheitsforschung | | | | | | 126 | 0.1 | |
| | Die Humanisten | | | | | | 116 | 0.1 | |
| | DKP | | | | | | 36 | 0.0 | |
| | SGP | | | | | | 28 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,619 | | | 1,328 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 153,520 | | | 153,711 | | |
| Turnout | Turnout | Turnout | Turnout | 155,139 | 73.1 | 3.0 | | | |
| | SPD hold | SPD hold | Majority | 12,101 | 7.9 | 5.9 | | | |

### 2013 election

Federal election (2013): Leverkusen – Cologne IV :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | SPD | Y Karl Lauterbach | Y Karl Lauterbach | 61,172 | 41.3 | 4.3 | 48,511 | 32.7 | 4.4 |
| | CDU | Helmut Nowak | Helmut Nowak | 58,201 | 39.3 | 3.9 | 52,884 | 35.6 | 5.8 |
| | Greens | Rainer Blum | Rainer Blum | 10,589 | 7.2 | 2.1 | 14,283 | 9.6 | 2.8 |
| | Left | Hamide Akbayir | Hamide Akbayir | 8,554 | 5.8 | 2.3 | 10,615 | 7.2 | 2.3 |
| | FDP | Guido Fischer | Guido Fischer | 3,447 | 2.3 | 5.5 | 7,212 | 4.9 | 9.4 |
| | AfD | | | | | | 5,807 | 3.9 | |
| | Pirates | | | | | | 3,816 | 2.6 | 0.8 |
| | NPD | Bernhard Blankenheim | Bernhard Blankenheim | 2,450 | 1.7 | 0.0 | 1,578 | 1.1 | 0.2 |
| | FW | Bettina Bernhard | Bettina Bernhard | 1,604 | 1.1 | | 632 | 0.4 | |
| | PARTEI | Torsten Arnold Tofahrn | Torsten Arnold Tofahrn | 1,529 | 1.0 | | 993 | 0.7 | |
| | PRO | | | | | | 514 | 0.3 | |
| | Volksabstimmung | | | | | | 315 | 0.2 | 0.1 |
| | BIG | | | | | | 277 | 0.2 | |
| | Nichtwahler | | | | | | 230 | 0.2 | |
| | ÖDP | | | | | | 202 | 0.1 | 0.1 |
| | REP | | | | | | 177 | 0.1 | 0.2 |
| | MLPD | Ernst Albert Herbert | Ernst Albert Herbert | 398 | 0.3 | 0.0 | 164 | 0.1 | 0.0 |
| | Party of Reason | | | | | | 96 | 0.1 | |
| | RRP | | | | | | 65 | 0.0 | 0.2 |
| | BüSo | | | | | | 30 | 0.0 | 0.0 |
| | PSG | | | | | | 23 | 0.0 | 0.0 |
| | Die Rechte | | | | | | 16 | 0.0 | |
| Informal votes | Informal votes | Informal votes | Informal votes | 2,086 | | | 1,590 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 147,944 | | | 148,440 | | |
| Turnout | Turnout | Turnout | Turnout | 150,030 | 70.1 | 1.4 | | | |
| | SPD hold | SPD hold | Majority | 2,971 | 2.0 | 0.4 | | | |

### 2009 election

Federal election (2009): Leverkusen – Cologne IV :
| Notes: | Notes: | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. | Blue background denotes the winner of the electorate vote. Pink background denotes a candidate elected from their party list. Yellow background denotes an electorate win by a list member, or other incumbent. A Y or N denotes status of any incumbent, win or lose respectively. |
| Party | Party | Candidate | Candidate | Votes | % | ±% | Party votes | % | ±% |
| | SPD | Y Karl Lauterbach | Y Karl Lauterbach | 53,517 | 37.1 | 12.0 | 40,982 | 28.3 | 13.5 |
| | CDU | Thomas Portz | Thomas Portz | 51,242 | 35.5 | 0.4 | 43,188 | 29.8 | 0.1 |
| | Greens | Ulrike Kessing | Ulrike Kessing | 13,386 | 9.3 | 4.0 | 18,064 | 12.5 | 2.5 |
| | Left | Manuel Lindlar | Manuel Lindlar | 11,723 | 8.1 | 3.7 | 13,715 | 9.5 | 3.9 |
| | FDP | Benedikt Vennemann | Benedikt Vennemann | 11,332 | 7.8 | 3.9 | 20,670 | 14.3 | 4.2 |
| | Pirates | | | | | | 2,578 | 1.8 | |
| | NPD | Bruno Kirchner | Bruno Kirchner | 2,364 | 1.6 | 0.6 | 1,815 | 1.3 | 0.4 |
| | Tierschutzpartei | | | | | | 1,039 | 0.7 | 0.3 |
| | FAMILIE | | | | | | 712 | 0.5 | 0.1 |
| | RENTNER | | | | | | 620 | 0.4 | |
| | Independent | Jan Dieckmann | Jan Dieckmann | 529 | 0.4 | | | | |
| | REP | | | | | | 448 | 0.3 | 0.0 |
| | RRP | | | | | | 292 | 0.2 | |
| | MLPD | Ernst Herbert | Ernst Herbert | 323 | 0.2 | 0.0 | 180 | 0.1 | 0.0 |
| | ÖDP | | | | | | 160 | 0.1 | |
| | Volksabstimmung | | | | | | 153 | 0.1 | 0.0 |
| | DVU | | | | | | 92 | 0.1 | |
| | Centre | | | | | | 76 | 0.1 | 0.0 |
| | BüSo | | | | | | 42 | 0.0 | 0.0 |
| | PSG | | | | | | 29 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 2,044 | | | 1,605 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 144,416 | | | 144,855 | | |
| Turnout | Turnout | Turnout | Turnout | 146,460 | 68.7 | 7.0 | | | |
| | SPD hold | SPD hold | Majority | 2,275 | 1.6 | 11.6 | | | |