Leverkusen – Cologne IV

100 Leverkusen – Cologne IV
Electoral district for the Bundestag
Leverkusen – Cologne IV in 2025
State	North Rhine-Westphalia
Population	313,500 (2019)
Electorate	209,102 (2021)
Major settlements	Leverkusen Cologne (partial)
Area	131.1 km2
Current electoral district
Created	2002
Party	SPD
Member	Karl Lauterbach
Elected	2005, 2009, 2013, 2017, 2021

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.^[1]

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).^[2]

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.^[1]

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.

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, and 2021.

Federal election (2021): Leverkusen – Cologne IV[3]
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.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	SPD	Y Karl Lauterbach		69,662	45.6	6.9	44,586	29.1	2.0
	CDU	Serap Güler		31,197	20.4	10.4	33,246	21.7	6.4
	Greens	Nyke Slawik		17,290	11.3	5.6	29,329	19.2	10.4
	FDP	Cornelia Besser		11,050	7.2	0.6	15,931	10.4	1.8
	AfD	Christer Cremer		10,797	7.1	1.7	10,966	7.2	2.6
	Left	Beate Hane-Knoll		5,657	3.7	2.4	7,318	4.8	4.5
	Human Environment Animal Protection						2,081	1.4	0.6
	PARTEI	Frauke Petzold		2,782	1.8	0.8	2,076	1.4	0.0
	dieBasis	Dirk Sattelmaier		2,222	1.5		1,715	1.1
	Team Todenhöfer						1,669	1.1
	Volt						996	0.7
	FW	Stephan Heintze		1,479	1.0		918	0.6	0.4
	Pirates						664	0.4	0.1
	Independent	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		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				1,403			1,163
Total valid votes				152,760			153,000
Turnout				154,163	73.7	0.6
	SPD hold		Majority	38,465	25.2	17.3

Federal election (2017): Leverkusen – Cologne IV[4]
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.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	SPD	Y Karl Lauterbach		59,373	38.7	2.7	41,671	27.1	5.6
	CDU	Helmut Nowak		47,272	30.8	8.5	43,175	28.1	7.5
	AfD	Günter Theodor Witzmann		13,408	8.7		14,970	9.7	5.8
	FDP	Rolf William Albach		10,114	6.6	4.3	18,719	12.2	7.3
	Left	Beate Hane-Knoll		9,430	6.1	0.4	14,284	9.3	2.1
	Greens	Lisa-Marie Friede		8,722	5.7	1.5	13,472	8.8	0.9
	PARTEI	Mark Benecke		3,990	2.6	1.6	2,102	1.4	0.7
	Human Environment Animal Protection						1,153	0.8
	AD-DEMOKRATEN						1,007	0.7
	Independent	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		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				1,619			1,328
Total valid votes				153,520			153,711
Turnout				155,139	73.1	3.0
	SPD hold		Majority	12,101	7.9	5.9

Federal election (2013): Leverkusen – Cologne IV[5]
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.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	SPD	Y Karl Lauterbach		61,172	41.3	4.3	48,511	32.7	4.4
	CDU	Helmut Nowak		58,201	39.3	3.9	52,884	35.6	5.8
	Greens	Rainer Blum		10,589	7.2	2.1	14,283	9.6	2.8
	Left	Hamide Akbayir		8,554	5.8	2.3	10,615	7.2	2.3
	FDP	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		2,450	1.7	0.0	1,578	1.1	0.2
	FW	Bettina Bernhard		1,604	1.1		632	0.4
	PARTEI	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		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				2,086			1,590
Total valid votes				147,944			148,440
Turnout				150,030	70.1	1.4
	SPD hold		Majority	2,971	2.0	0.4

Federal election (2009): Leverkusen – Cologne IV[6]
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.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	SPD	Y Karl Lauterbach		53,517	37.1	12.0	40,982	28.3	13.5
	CDU	Thomas Portz		51,242	35.5	0.4	43,188	29.8	0.1
	Greens	Ulrike Kessing		13,386	9.3	4.0	18,064	12.5	2.5
	Left	Manuel Lindlar		11,723	8.1	3.7	13,715	9.5	3.9
	FDP	Benedikt Vennemann		11,332	7.8	3.9	20,670	14.3	4.2
	Pirates						2,578	1.8
	NPD	Bruno Kirchner		2,364	1.6	0.6	1,815	1.3	0.4
	Human Environment Animal Protection						1,039	0.7	0.3
	FAMILIE						712	0.5	0.1
	RENTNER						620	0.4
	Independent	Jan Dieckmann		529	0.4
	REP						448	0.3	0.0
	RRP						292	0.2
	MLPD	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				2,044			1,605
Total valid votes				144,416			144,855
Turnout				146,460	68.7	7.0
	SPD hold		Majority	2,275	1.6	11.6