33 Diepholz – Nienburg I
Electoral district for theBundestag
Diepholz – Nienburg I in 2025
State	Lower Saxony
Population	247,900 (2019)
Electorate	194,371 (2021)
Major settlements	Syke Diepholz
Area	2,490.9 km2
Current electoral district
Created	1949
Party	CDU
Member	Axel Knoerig
Elected	2009,2013,2017,2021,2025

Diepholz – Nienburg I is an electoral constituency (German:Wahlkreis) represented in theBundestag. It elects one member viafirst-past-the-post voting. Under the current constituency numbering system, it is designated as constituency 33. It is located in centralLower Saxony, comprising theDiepholz district and parts of theNienburg district.^[1]

Diepholz – Nienburg I was created for the inaugural1949 federal election. Since 2009, it has been represented byAxel Knoerig of theChristian Democratic Union (CDU).^[2]

Diepholz – Nienburg I is located in centralLower Saxony. As of the 2021 federal election, it comprises the entirety of the Diepholz district as well as theSamtgemeinden ofGrafschaft Hoya andUchte from the Nienburg district.^[1]

Diepholz – Nienburg I was created in 1949, then known asDiepholz – Melle – Wittlage. In the 1965 through 1976 elections, it was namedNienburg. From 1980 through 1998, it was namedDiepholz. It acquired its current name in the 2002 election. In the inaugural Bundestag election, it was Lower Saxony constituency 23 in the numbering system. From 1953 through 1961, it was number 45. From 1965 through 1976, it was number 34. From 1980 through 1998, it was number 28. From 2002 through 2009, it was number 34. Since 2013, it has been constituency 33.

Originally, the constituency comprised the districts of Grafschaft Diepholz, Melle, and Wittlage. It also included part of the Nienburg district, specifically the territory which now comprises the Samtgemeinde of Uchte. In the 1965 election, the entirety of the Nienburg district was transferred to the constituency. In the 1980 election, the area of the abolished Melle and Wittlage districts was transferred away, as was the Nienburg district. From then until 2002, the constituency comprised only the district of Diepholz. It acquired its current borders in the 2002 election.

The constituency was first held byRudolf Eickhoff of theGerman Party (DP), who served from 1949 until 1957. He was succeeded byKarl Gossel of the Christian Democratic Union (CDU), who served two terms. Fellow CDU membersGünter von Nordenskjöld (1965–72) andRichard Ey (1972–80) then each served two terms. In 1980, theSocial Democratic Party (SPD) won the constituency, andPeter Würtz was its representative for a single term. The CDU'sWalter Link regained it in 1983, and served until 1998. In 1998, the SPD'sDetlev von Larcher won, and served a single term.Rolf Kramer of the SPD was representative from 2002 to 2009.Axel Knoerig of the CDU has served as representative since 2009.

Federal election (2025): Diepholz – Nienburg I[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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	YAxel Knoerig		56,910	35.4	1.6	49,080	30.4	5.1
	SPD	Peggy Schierenbeck		44,311	27.5	4.4	36,820	22.8	10.2
	AfD	Andreas-Dieter Iloff		27.353	17.0	10.3	28,346	17.6	10.5
	Greens	Thomas Heidemann		13,005	8.1	5.5	16,558	10.3	4.2
	Left	Michael Barth		9,613	6.0	3.2	10,982	6.8	4.1
	FDP	Heike Hanniker		5,318	3.3	6.1	7,376	4.6	7.5
	BSW						5,920	3.7
	FW	Kareen Heineking		4,449	2.8		1,943	1.2	0.3
	Tierschutzpartei						1,807	1.1	0.1
	Volt						807	0.5	0.3
	PARTEI						694	0.4	0.5
	dieBasis						414	0.3	0.9
	Pirates						234	0.1	0.2
	BD						212	0.1
	Humanists						95	0.1	0.0
	MLPD						29	0.0	0.0
Informal votes				1,113			755
Total valid votes				160,959			161,317
Turnout				162,072	83.5	7.9
	CDUhold		Majority	12,599	7.9	6.0

Federal election (2021): Diepholz – Nienburg I[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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	YAxel Knoerig		49,116	33.8	10.8	36,915	25.3	12.6
	SPD	Peggy Schierenbeck		46,455	31.9	4.6	48,196	33.0	7.6
	Greens	Sylvia Holste-Hagen		19,702	13.5	5.9	21,139	14.5	6.3
	FDP	Jan Andreas Hinderks		13,671	9.4	2.4	17,628	12.1	1.5
	AfD	Alfons Muhle		9,683	6.7	1.5	10,372	7.1	1.3
	Left	Jürgen Abelmann		4,029	2.8	2.5	3,920	2.7	3.4
	Tierschutzpartei						1,774	1.2	0.3
	dieBasis	Detlev Pigors		2,111	1.5		1,722	1.2
	FW						1,322	0.9	0.5
	PARTEI						1,294	0.9	0.1
	Independent	Rüdiger Gums		727	0.5
	Pirates						465	0.3	0.0
	Team Todenhöfer						395	0.3
	Volt						228	0.2
	NPD						123	0.1	0.2
	Humanists						118	0.1
	ÖDP						113	0.1	0.1
	V-Partei3						98	0.1	0.1
	du.						78	0.1
	LKR						39	0.0
	MLPD						21	0.0	0.0
	DKP						12	0.0	0.0
Informal votes				1,460			982
Total valid votes				145,494			145,972
Turnout				146,954	75.6	0.9
	CDUhold		Majority	2,661	1.9	15.4

Federal election (2017): Diepholz – Nienburg I[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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	YAxel Knoerig		65,465	44.6	2.9	55,833	37.9	5.6
	SPD	Tevfik Özkan		40,102	27.3	6.1	37,505	25.5	6.0
	AfD	Karl-Heinz Gerd Breternitz		11,955	8.1	5.6	12,434	8.4	5.0
	Greens	Klaus-Joachim Schmelz		11,252	7.7	0.1	11,992	8.1	0.0
	FDP	Alexander Carapinha-Hesse		10,285	7.0	5.0	15,515	10.5	5.6
	Left	Jürgen Abelmann		7,759	5.3	1.8	8,951	6.1	1.6
	Tierschutzpartei						1,353	0.9	0.1
	PARTEI						1,104	0.7
	FW						668	0.5
	Pirates						476	0.3	1.2
	NPD						366	0.2	0.6
	BGE						258	0.2
	ÖDP						219	0.1
	DM						206	0.1
	V-Partei³						191	0.1
	DiB						162	0.1
	MLPD						28	0.0	0.0
	DKP						17	0.0
Informal votes				1,480			1,020
Total valid votes				146,818			147,278
Turnout				148,298	76.5	2.7
	CDUhold		Majority	25,363	17.3	3.2

Federal election (2013): Diepholz – Nienburg I[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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	YAxel Knoerig		66,862	47.5	9.9	61,404	43.5	9.7
	SPD	Christoph Lanzendörfer		47,067	33.4	1.0	44,431	31.5	3.8
	Greens	Torsten Eggelmann		10,651	7.6	0.9	11,556	8.2	1.8
	Left	Ingo Waschner		4,933	3.5	3.5	6,359	4.5	3.8
	AfD	Arno Heinz Staschewski		3,571	2.5		4,840	3.4
	FDP	Marcel Schiller		2,797	2.0	9.4	6,929	4.9	10.8
	Pirates	Mario Gärtner		2,166	1.5		2,143	1.5	0.2
	NPD	Bernd Neumann		1,288	0.9	0.3	1,175	0.8	0.2
	Tierschutzpartei						1,196	0.8	0.1
	FW	Olaf Schulz		903	0.6		673	0.5
	Independent	Rüdiger Gums		616	0.4
	PRO						169	0.1
	PBC						137	0.1
	REP						102	0.1
	MLPD						21	0.0	0.0
Informal votes				1,496			1,215
Total valid votes				140,854			141,135
Turnout				142,350	73.7	0.4
	CDUhold		Majority	19,795	14.1	11.1

Federal election (2009): Diepholz – Nienburg I[7]
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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	Axel Knoerig		52,599	37.5	1.5	47,565	33.8	0.4
	SPD	N Rolf Kramer		48,313	34.5	11.3	38,955	27.7	14.0
	FDP	Horst Gaumann		15,928	11.4	6.4	22,067	15.7	5.0
	Greens	Stefanie Henneke		11,917	8.5	3.0	13,999	10.0	2.6
	Left	Ulrich Vanek		9,775	7.0	3.4	11,701	8.3	4.0
	Pirates						2,453	1.7
	NPD	Dietrich Seidel		1,660	1.2	0.0	1,442	1.0	0.2
	Tierschutzpartei						1,059	0.8	0.2
	RRP						937	0.7
	DVU						193	0.1
	ÖDP						143	0.1
	MLPD						27	0.0	0.0
Informal votes				1,646			1,315
Total valid votes				140,192			140,523
Turnout				141,838	73.3	5.7
	CDUgain fromSPD		Majority	4,286	3.1

Federal election (2005):Diepholz – Nienburg I[8]
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. AY orN denotes status of anyincumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	SPD	Y Rolf Kramer		68,750	45.7	2.6	62,773	41.7	6.1
	CDU	Axel Knoerig		58,684	39.0	1.7	50,311	33.4	0.4
	Greens	Torsten König		8,329	5.5	1.5	11,070	7.4	0.3
	FDP	Marco Genthe		7,454	5.0	1.8	16,092	10.7	1.7
	Left	Ulrich Vanek		5,418	3.6		6,577	4.4	3.4
	NPD	Gustav-Arnold Eggerking		1,735	1.2		1,782	1.2	1.0
	Tierschutzpartei						870	0.6	0.2
	GRAUEN						545	0.4	0.2
	PBC						315	0.2	0.1
	Pro German Center – Pro D-Mark Initiative						112	0.1
	BüSo						75	0.0	0.0
	MLPD						56	0.0
Informal votes				1,664			1,456
Total valid votes				150,370			150,578
Turnout				152,034	79.0	1.5
	SPDhold		Majority	10,066	6.7

• Federal electoral districts in Lower Saxony
• Bundestag electoral districts established in 1949

• Articles with short description
• Short description matches Wikidata