Rhein-Sieg-Kreis I

96 Rhein-Sieg-Kreis I
Electoral district for the Bundestag
Rhein-Sieg-Kreis I in 2025
State	North Rhine-Westphalia
Population	314,900 (2019)
Electorate	238,627 (2021)
Major settlements	Troisdorf Hennef (Sieg) Siegburg
Area	660.7 km2
Current electoral district
Created	1949
Party	CDU
Member	Elisabeth Winkelmeier-Becker
Elected	2005, 2009, 2013, 2017, 2021

Rhein-Sieg-Kreis I 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 96. It is located in southwestern North Rhine-Westphalia, comprising the eastern part of the Rhein-Sieg-Kreis district.^[1]

Rhein-Sieg-Kreis I was created for the inaugural 1949 federal election. Since 2002, it has been represented by Elisabeth Winkelmeier-Becker of the Christian Democratic Union (CDU).^[2]

Rhein-Sieg-Kreis I is located in southwestern North Rhine-Westphalia. As of the 2021 federal election, it comprises the municipalities of Eitorf, Hennef (Sieg), Lohmar, Much, Neunkirchen-Seelscheid, Niederkassel, Ruppichteroth, Siegburg, Troisdorf, and Windeck from the Rhein-Sieg-Kreis district.^[1]

Rhein-Sieg-Kreis I was created in 1949, then known as Siegkreis. In the 1965 and 1969 elections, it was named Siegkreis I – Bonn-Land. It acquired its current name in the 1972 election. In the 1949 election, it was North Rhine-Westphalia constituency 11 in the numbering system. From 1953 through 1961, it was number 70. From 1965 through 1998, it was number 64. From 2002 through 2009, it was number 98. In the 2013 through 2021 elections, it was number 97. From the 2025 election, it has been number 96.

Originally, the constituency was coterminous with the Siegkreis district. In the 1965 through 1976 elections, it comprised the district of Landkreis Bonn as well as the modern municipalities of Bad Honnef, Königswinter, Niederkassel, Troisdorf, and Sankt Augustin from the Siegkreis district. It acquired its current borders in the 1980 election.

The constituency has been held by the Christian Democratic Union (CDU) during all but two Bundestag terms since its creation in 1949. It was first represented by Peter Etzenbach of the CDU from 1949 to 1961, followed by Georg Kliesing under 1976. Franz Möller served a single term from 1976 to 1980, being succeeded by Adolf Herkenrath. Andreas Krautscheid was elected in 1994 and served a single term. The Social Democratic Party (SPD) won the constituency in 1998, and Uwe Göllner served as representative. The CDU regained it in 2005 with candidate Elisabeth Winkelmeier-Becker. She was re-elected in 2009, 2013, 2017, and 2021.

Federal election (2021): Rhein-Sieg-Kreis 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. A Y or N denotes status of any incumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	Y Elisabeth Winkelmeier-Becker		60,776	32.6	11.7	51,474	27.6	6.6
	SPD	Sebastian Hartmann		53,213	28.5	0.9	49,529	26.5	4.1
	Greens	Lisa Anschütz		26,270	14.1	7.6	29,305	15.7	8.2
	FDP	Ralph Lorenz		16,604	8.9	1.5	23,122	12.4	2.5
	AfD	Hans Günter Eifler		13,045	7.0		13,604	7.3	2.7
	Left	Alexander Neu		6,242	3.3	4.8	6,353	3.4	3.7
	Human Environment Animal Protection						3,021	1.6	0.8
	PARTEI	Andreas Langel		3,828	2.1		2,067	1.1	0.2
	dieBasis	Ellen Hölzer		2,951	1.6		2,583	1.4
	FW	Andreas Irion		1,929	1.0		1,392	0.7	0.5
	Team Todenhöfer						921	0.5
	Volt	Christian Sontag		1,006	0.5		921	0.5
	Pirates						804	0.4	0.0
	Volksabstimmung	Helmut Fleck		602	0.3	2.7
	LIEBE						278	0.1
	Gesundheitsforschung						223	0.1	0.0
	Bündnis C						220	0.1
	NPD						164	0.1	0.1
	ÖDP						156	0.1	0.0
	Humanists						153	0.1	0.0
	LfK						154	0.1
	V-Partei3						134	0.1	0.0
	du.						87	0.0
	PdF						52	0.0
	LKR						46	0.0
	SGP						23	0.0	0.0
	MLPD						19	0.0	0.0
	DKP						19	0.0	0.0
Informal votes				1,751			1,393
Total valid votes				186,466			186,824
Turnout				188,217	78.9	1.2
	CDU hold		Majority	7,563	4.1	12.6

Federal election (2017): Rhein-Sieg-Kreis 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. A Y or N denotes status of any incumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	Y Elisabeth Winkelmeier-Becker		79,987	44.3	5.3	62,334	34.1	9.3
	SPD	Sebastian Hartmann		49,988	27.7	1.8	40,922	22.4	4.6
	FDP	Ralph Lorenz		18,768	10.4	7.9	27,267	14.9	8.6
	AfD						18,237	10.0	5.6
	Left	Alexander Neu		14,684	8.1	3.5	13,038	7.1	1.6
	Greens	Elisabeth Anschütz		11,762	6.5	0.1	13,757	7.5	0.7
	PARTEI						1,610	0.9	0.5
	Human Environment Animal Protection						1,538	0.8
	Pirates						771	0.4	1.8
	Volksabstimmung	Helmut Fleck		5,374	3.0	2.3	630	0.3	0.1
	FW						509	0.3	0.0
	AD-DEMOKRATEN						374	0.2
	NPD						300	0.2	0.7
	DiB						237	0.1
	ÖDP						233	0.1	0.0
	BGE						211	0.1
	V-Partei³						206	0.1
	Gesundheitsforschung						181	0.1
	DM						178	0.1
	Die Humanisten						123	0.1
	MLPD						73	0.0	0.0
	DKP						18	0.0
	SGP						10	0.0	0.0
Informal votes				3,732			1,538
Total valid votes				180,563			182,757
Turnout				184,295	77.6	4.0
	CDU hold		Majority	29,999	16.6	3.5

Federal election (2013): Rhein-Sieg-Kreis 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. A Y or N denotes status of any incumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	Y Elisabeth Winkelmeier-Becker		84,556	49.6	4.8	74,187	43.4	8.0
	SPD	Sebastian Hartmann		50,271	29.5	3.7	46,065	27.0	4.0
	Greens	Robert Wendt		10,895	6.4	1.9	14,000	8.2	2.3
	Left	Alexander Neu		7,946	4.7	1.7	9,496	5.6	1.5
	AfD	Hans-Josef Frings		5,519	3.2		7,514	4.4
	FDP	Jürgen Peter		4,172	2.4	8.9	10,796	6.3	12.7
	Pirates	Martin Zieroth		3,472	2.0		3,771	2.2	0.5
	NPD	Hans Hermann Maria Rochel		1,618	0.9	0.1	1,464	0.9	0.0
	Volksabstimmung	Helmut Fleck		1,150	0.7	0.3	809	0.5	0.0
	PARTEI						713	0.4
	FW	Iryna May		803	0.5		534	0.3
	PRO						315	0.2
	ÖDP						238	0.1	0.0
	Nichtwahler						205	0.1
	BIG						152	0.1
	REP						148	0.1	0.1
	Party of Reason						138	0.1
	RRP						103	0.1	0.1
	PSG						38	0.0	0.0
	BüSo						23	0.0	0.0
	Die Rechte						20	0.0
	MLPD						18	0.0	0.0
Informal votes				2,251			1,906
Total valid votes				170,402			170,747
Turnout				172,653	73.7	1.5
	CDU hold		Majority	34,285	20.1	1.0

Federal election (2009): Rhein-Sieg-Kreis 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. A Y or N denotes status of any incumbent, win or lose respectively.
Party		Candidate		Votes	%	±%	Party votes	%	±%
	CDU	Y Elisabeth Winkelmeier-Becker		73,959	44.9	0.7	58,516	35.4	2.3
	SPD	Dietmar Tendler		42,568	25.8	15.5	37,986	23.0	11.7
	FDP	Markus Bestgen		18,727	11.4	7.0	31,488	19.1	6.9
	Greens	Katja Ruiters		15,389	9.3	5.2	17,359	10.5	2.3
	Left	Monika Dahl		10,523	6.4	3.2	11,650	7.1	2.7
	Pirates						2,887	1.7
	NPD	Ariane Christine Meise		1,765	1.1	0.2	1,462	0.9	0.0
	Human Environment Animal Protection						1,113	0.7	0.2
	Volksabstimmung	Helmut Fleck		1,581	1.0	0.4	741	0.4	0.1
	FAMILIE						678	0.4	0.0
	RENTNER						432	0.3
	Independent	Victor Trenkenschuh		319	0.2
	REP						271	0.2	0.0
	RRP						194	0.1
	ÖDP						153	0.1
	Centre						100	0.1	0.0
	DVU						93	0.1
	BüSo						21	0.0	0.0
	MLPD						19	0.0	0.0
	PSG						15	0.0	0.0
Informal votes				2,203			1,856
Total valid votes				164,831			165,178
Turnout				167,034	72.2	7.2
	CDU hold		Majority	31,391	19.1	15.0