# Siegen-Wittgenstein (electoral district)

Siegen-Wittgenstein 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 147. It is located in southern North Rhine-Westphalia, comprising the district of Siegen-Wittgenstein.
Siegen-Wittgenstein was created for the inaugural 1949 federal election. From 2009 to 2025, it has been represented by Volkmar Klein of the Christian Democratic Union (CDU). Since 2025 it is been represented by Benedikt Büdenbender of the CDU.

## Geography

Siegen-Wittgenstein is located in southern North Rhine-Westphalia. As of the 2021 federal election, it is coterminous with the Siegen-Wittgenstein district.

## History

Siegen-Wittgenstein was created in 1949, then known as Siegen-Stadt und -Land – Wittgenstein. From 1965 through 1976, it was named Siegen – Wittgenstein. From 1980 through 1998, it was named Siegen-Wittgenstein I. It acquired its current name in the 2002 election. In the 1949 election, it was North Rhine-Westphalia constituency 66 in the numbering system. In the 1953 through 1976 elections, it was number 125. From 1980 through 1998, it was number 120. From 2002 through 2009, it was number 149. In the 2013 through 2021 elections, it was number 148. From the 2025 election, it has been number 147.
Originally, the constituency comprised the independent city of Siegen as well as the districts of Landkreis Siegen and Wittgenstein. In the 1969 and 1972 elections, it comprised the districts of Siegen and Wittgenstein. In the 1976 election, it was coterminous with the Siegen-Wittgenstein district. In the 1980 through 1998 elections, it comprised the Siegen-Wittgenstein district without the municipalities of Freudenberg, Hilchenbach, and Kreuztal. Since the 2002 election, it has again been coterminous with the Siegen-Wittgenstein district.
| Election | No. | Name | Borders |
| 1949 | 66 | Siegen-Stadt und -Land – Wittgenstein | Siegen city Landkreis Siegen district Wittgenstein district |
| 1953 | 125 | Siegen-Stadt und -Land – Wittgenstein | Siegen city Landkreis Siegen district Wittgenstein district |
| 1957 | 125 | Siegen-Stadt und -Land – Wittgenstein | Siegen city Landkreis Siegen district Wittgenstein district |
| 1961 | 125 | Siegen-Stadt und -Land – Wittgenstein | Siegen city Landkreis Siegen district Wittgenstein district |
| 1965 | 125 | Siegen – Wittgenstein | Siegen city Landkreis Siegen district Wittgenstein district |
| 1969 | 125 | Siegen – Wittgenstein | Siegen district Wittgenstein district |
| 1972 | 125 | Siegen – Wittgenstein | Siegen district Wittgenstein district |
| 1976 | 125 | Siegen – Wittgenstein | Siegen-Wittgenstein district |
| 1980 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 1983 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 1987 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 1990 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 1994 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 1998 | 120 | Siegen-Wittgenstein I | Siegen-Wittgenstein district (excluding Freudenberg, Hilchenbach, and Kreuztal municipalities) |
| 2002 | 149 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2005 | 149 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2009 | 149 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2013 | 148 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2017 | 148 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2021 | 148 | Siegen-Wittgenstein | Siegen-Wittgenstein district |
| 2025 | 147 | Siegen-Wittgenstein | Siegen-Wittgenstein district |

## Members

The constituency was first represented by Theodor Siebel of the Christian Democratic Union (CDU) from 1949 to 1961. Hermann Schmidt of the Social Democratic Party (SPD) was elected in 1961 and served a single term, before Botho Prinz zu Sayn-Wittgenstein-Hohenstein regained it for the CDU in 1965. Schmidt was once again elected in 1969 and served four further terms as representative. Paul Breuer of the CDU was elected in 1983 and served until 1998. Marianne Klappert gained the constituency for the SPD in the 1998 election, and was succeeded in 2002 by fellow party member Willi Brase. Volkmar Klein of the CDU was elected in 2009, and re-elected in 2013, 2017, and 2021. In 2025 Benedikt Büdenbender, also of the CDU, succeeded Klein.
| Election | Member | Party | % |
| 1949 | Theodor Siebel | CDU | 38.0 |
| 1953 | Theodor Siebel | CDU | 46.2 |
| 1957 | Theodor Siebel | CDU | 51.4 |
| 1961 | Hermann Schmidt | SPD | 41.6 |
| 1965 | Botho Prinz zu Sayn-Wittgenstein-Hohenstein | CDU | 46.2 |
| 1969 | Hermann Schmidt | SPD | 49.7 |
| 1972 | Hermann Schmidt | SPD | 54.0 |
| 1976 | Hermann Schmidt | SPD | 48.4 |
| 1980 | Hermann Schmidt | SPD | 49.5 |
| 1983 | Paul Breuer | CDU | 50.6 |
| 1987 | Paul Breuer | CDU | 45.8 |
| 1990 | Paul Breuer | CDU | 45.6 |
| 1994 | Paul Breuer | CDU | 44.1 |
| 1998 | Marianne Klappert | SPD | 46.4 |
| 2002 | Willi Brase | SPD | 44.3 |
| 2005 | Willi Brase | SPD | 43.6 |
| 2009 | Volkmar Klein | CDU | 41.5 |
| 2013 | Volkmar Klein | CDU | 45.8 |
| 2017 | Volkmar Klein | CDU | 40.1 |
| 2021 | Volkmar Klein | CDU | 33.6 |
| 2025 | Benedikt Büdenbender | CDU | 34.1 |

## Election results
### 2025 election

Federal election (2025): Siegen-Wittgenstein :
| 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 | % | ±% |
| | CDU | Benedikt Büdenbender | Benedikt Büdenbender | 56,827 | 34.1 | 0.5 | 52,767 | 31.6 | 5.4 |
| | SPD | Luiza Licina-Bode | Luiza Licina-Bode | 40,825 | 24.5 | 5.9 | 33,313 | 19.9 | 11.3 |
| | AfD | Christian Zaum | Christian Zaum | 34,137 | 20.5 | 11.5 | 33905 | 20.3 | 11.1 |
| | Greens | Laura Kraft | Laura Kraft | 12,486 | 7.5 | 2.9 | 14,338 | 8.6 | 2.5 |
| | Left | Katrin Fey | Katrin Fey | 10,725 | 6.4 | 3.4 | 12,099 | 7.2 | 3.7 |
| | BSW | | | | | | 7,472 | 4.5 | |
| | FDP | Guido Müller | Guido Müller | 5,300 | 3.2 | 5.3 | 6,628 | 4.0 | 7.6 |
| | FW | Benjamin Grimm | Benjamin Grimm | 2,340 | 1.4 | 0.2 | 1,297 | 0.8 | 0.1 |
| | PARTEI | Tobias Wied | Tobias Wied | 2,190 | 1.3 | 0.8 | 1,004 | 0.6 | 0.7 |
| | Tierschutzpartei | | | | | | 1,915 | 1.1 | 0.2 |
| | Volt | Luis Heinz | Luis Heinz | 1,290 | 0.8 | 0.3 | 925 | 0.6 | 0.1 |
| | Values | Andreas Klein | Andreas Klein | 670 | 0.4 | | 346 | 0.2 | |
| | dieBasis | Hubert Weber | Hubert Weber | | | 1.4 | 418 | 0.2 | 1.1 |
| | BD | | | | | | 245 | 0.1 | |
| | Team Todenhöfer | | | | | | 244 | 0.1 | 0.4 |
| | PdF | | | | | | 224 | 0.1 | 0.1 |
| | MERA25 | | | | | | 45 | 0.0 | |
| | MLPD | | | | | | 26 | 0.0 | 0.0 |
| | Pirates | | | | | | | | 0.3 |
| | Bündnis C | | | | | | | | 0.3 |
| | ÖDP | | | | | | | | 0.2 |
| | Gesundheitsforschung | | | | | | | | 0.1 |
| | Humanists | | | | | | | | 0.1 |
| | SGP | | | | | | | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,419 | | | 998 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 166,790 | | | 167,211 | | |
| Turnout | Turnout | Turnout | Turnout | 168,209 | 83.1 | 5.0 | | | |
| | CDU hold | CDU hold | Majority | 16,002 | 9.6 | | | | |

### 2021 election

Federal election (2021): Siegen-Wittgenstein :
| 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 | % | ±% |
| | CDU | Y Volkmar Klein | Y Volkmar Klein | 54,042 | 33.6 | 6.5 | 42,161 | 26.2 | 7.8 |
| | SPD | Luiza Licina-Bode | Luiza Licina-Bode | 48,897 | 30.4 | 0.2 | 50,327 | 31.3 | 4.8 |
| | Greens | Laura Kraft | Laura Kraft | 16,624 | 10.3 | 6.1 | 17,842 | 11.1 | 5.6 |
| | AfD | Henning Zoz | Henning Zoz | 14,424 | 9.0 | 0.8 | 14,709 | 9.1 | 1.5 |
| | FDP | Guido Müller | Guido Müller | 13,586 | 8.5 | 1.1 | 18,597 | 11.6 | 0.3 |
| | Left | Ekkard Büdenbender | Ekkard Büdenbender | 4,900 | 3.0 | 2.9 | 5,726 | 3.6 | 4.3 |
| | Tierschutzpartei | | | | | | 2,099 | 1.3 | 0.6 |
| | PARTEI | Tobias Wied | Tobias Wied | 3,385 | 2.1 | 0.7 | 2,043 | 1.3 | 0.4 |
| | dieBasis | Hubert Weber | Hubert Weber | 2,215 | 1.4 | | 2,107 | 1.3 | |
| | FW | Horst Linde | Horst Linde | 1,868 | 1.2 | | 1,340 | 0.8 | 0.6 |
| | Team Todenhöfer | | | | | | 886 | 0.6 | |
| | Volt | Inka Berg | Inka Berg | 836 | 0.5 | | 679 | 0.4 | |
| | Pirates | | | | | | 485 | 0.3 | 0.1 |
| | Bündnis C | | | | | | 467 | 0.3 | |
| | ÖDP | | | | | | 358 | 0.2 | 0.1 |
| | LIEBE | | | | | | 198 | 0.1 | |
| | Gesundheitsforschung | | | | | | 182 | 0.1 | 0.0 |
| | NPD | | | | | | 166 | 0.1 | 0.2 |
| | Humanists | | | | | | 156 | 0.1 | 0.0 |
| | LfK | | | | | | 134 | 0.1 | |
| | V-Partei3 | | | | | | 103 | 0.1 | 0.0 |
| | du. | | | | | | 68 | 0.0 | |
| | PdF | | | | | | 51 | 0.0 | |
| | Independent | Roland Meister | Roland Meister | 49 | 0.0 | | | | |
| | DKP | | | | | | 47 | 0.0 | 0.0 |
| | LKR | | | | | | 36 | 0.0 | |
| | MLPD | | | | | | 24 | 0.0 | 0.0 |
| | SGP | | | | | | 7 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,336 | | | 1,164 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 160,826 | | | 160,998 | | |
| Turnout | Turnout | Turnout | Turnout | 162,162 | 78.1 | 1.9 | | | |
| | CDU hold | CDU hold | Majority | 5,145 | 3.2 | 6.7 | | | |

### 2017 election

Federal election (2017): Siegen-Wittgenstein :
| 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 | % | ±% |
| | CDU | Y Volkmar Klein | Y Volkmar Klein | 64,484 | 40.1 | 5.6 | 54,648 | 34.0 | 7.6 |
| | SPD | Heiko Becker | Heiko Becker | 48,560 | 30.2 | 6.3 | 42,551 | 26.4 | 5.6 |
| | AfD | Andreas Appelt | Andreas Appelt | 15,728 | 9.8 | 6.7 | 17,154 | 10.7 | 5.7 |
| | FDP | Hermann Siebdrat | Hermann Siebdrat | 11,742 | 7.3 | 5.1 | 19,125 | 11.9 | 7.2 |
| | Left | Sylvia Gabelmann | Sylvia Gabelmann | 9,554 | 5.9 | 1.5 | 12,624 | 7.8 | 2.1 |
| | Greens | Simon Rock | Simon Rock | 6,885 | 4.3 | 0.8 | 8,857 | 5.5 | 0.9 |
| | PARTEI | Florian Kiel | Florian Kiel | 2,190 | 1.4 | | 1,442 | 0.9 | 0.6 |
| | Tierschutzpartei | | | | | | 1,116 | 0.7 | |
| | ÖDP | Jörn Krause | Jörn Krause | 1,002 | 0.6 | | 578 | 0.4 | 0.2 |
| | Pirates | | | | | | 566 | 0.4 | 1.4 |
| | Independent | Dominik Eichbaum | Dominik Eichbaum | 556 | 0.3 | | | | |
| | AD-DEMOKRATEN | | | | | | 492 | 0.3 | |
| | NPD | | | | | | 411 | 0.3 | 0.9 |
| | FW | | | | | | 410 | 0.3 | 0.1 |
| | Volksabstimmung | | | | | | 145 | 0.1 | 0.1 |
| | DM | | | | | | 142 | 0.1 | |
| | V-Partei³ | | | | | | 141 | 0.1 | |
| | DiB | | | | | | 131 | 0.1 | |
| | Gesundheitsforschung | | | | | | 130 | 0.1 | |
| | BGE | | | | | | 122 | 0.1 | |
| | Die Humanisten | | | | | | 93 | 0.1 | |
| | MLPD | | | | | | 41 | 0.0 | 0.0 |
| | DKP | | | | | | 33 | 0.0 | |
| | SGP | | | | | | 7 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,605 | | | 1,347 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 160,701 | | | 160,959 | | |
| Turnout | Turnout | Turnout | Turnout | 162,306 | 76.2 | 3.7 | | | |
| | CDU hold | CDU hold | Majority | 15,924 | 9.9 | 0.6 | | | |

### 2013 election

Federal election (2013): Siegen-Wittgenstein :
| 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 | % | ±% |
| | CDU | Y Volkmar Klein | Y Volkmar Klein | 70,833 | 45.8 | 4.2 | 64,307 | 41.5 | 6.7 |
| | SPD | Willi Brase | Willi Brase | 56,510 | 36.5 | 2.6 | 49,563 | 32.0 | 3.1 |
| | Greens | Peter Neuhaus | Peter Neuhaus | 7,808 | 5.0 | | 9,937 | 6.4 | 2.2 |
| | Left | Peter Schulte | Peter Schulte | 6,891 | 4.5 | 3.3 | 8,920 | 5.8 | 2.2 |
| | AfD | | | 4,744 | 3.1 | | 7,653 | 4.9 | |
| | FDP | Helga Daub | Helga Daub | 3,383 | 2.2 | 7.8 | 7,327 | 4.7 | 10.1 |
| | Pirates | Nils Faerber | Nils Faerber | 2,732 | 1.8 | | 2,722 | 1.8 | 0.4 |
| | NPD | | | 1,856 | 1.2 | 0.4 | 1,759 | 1.1 | 0.1 |
| | PARTEI | | | | | | 450 | 0.3 | |
| | BIG | | | | | | 406 | 0.3 | |
| | PRO | | | | | | 312 | 0.2 | |
| | Volksabstimmung | | | | | | 312 | 0.2 | 0.1 |
| | ÖDP | | | | | | 286 | 0.2 | 0.0 |
| | REP | | | | | | 269 | 0.2 | 0.3 |
| | FW | | | | | | 243 | 0.2 | |
| | Nichtwahler | | | | | | 146 | 0.1 | |
| | Party of Reason | | | | | | 101 | 0.1 | |
| | RRP | | | | | | 55 | 0.0 | 0.1 |
| | MLPD | | | | | | 41 | 0.0 | 0.0 |
| | PSG | | | | | | 35 | 0.0 | 0.0 |
| | Die Rechte | | | | | | 30 | 0.0 | |
| | BüSo | | | | | | 22 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 1,812 | | | 1,673 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 154,757 | | | 154,896 | | |
| Turnout | Turnout | Turnout | Turnout | 156,569 | 72.6 | 0.7 | | | |
| | CDU hold | CDU hold | Majority | 14,323 | 9.3 | 6.9 | | | |

### 2009 election

Federal election (2009): Siegen-Wittgenstein :
| 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 | % | ±% |
| | CDU | Volkmar Klein | Volkmar Klein | 64,217 | 41.5 | 0.0 | 53,999 | 34.8 | 1.8 |
| | SPD | N Willi Brase | N Willi Brase | 60,500 | 39.1 | 4.4 | 44,822 | 28.9 | 10.2 |
| | FDP | Helga Daub | Helga Daub | 15,482 | 10.0 | 5.1 | 23,059 | 14.9 | 5.4 |
| | Greens | | | | | | 13,385 | 8.6 | 2.9 |
| | Left | Peter Schulte | Peter Schulte | 12,009 | 7.8 | 4.0 | 12,362 | 8.0 | 2.7 |
| | Pirates | | | | | | 2,044 | 1.3 | |
| | NPD | Stefan Flug | Stefan Flug | 2,399 | 1.6 | 0.8 | 1,910 | 1.2 | 0.5 |
| | Tierschutzpartei | | | | | | 920 | 0.6 | 0.0 |
| | FAMILIE | | | | | | 755 | 0.5 | 0.1 |
| | REP | | | | | | 660 | 0.4 | 0.4 |
| | RENTNER | | | | | | 485 | 0.3 | |
| | ÖDP | | | | | | 218 | 0.1 | |
| | RRP | | | | | | 200 | 0.1 | |
| | Volksabstimmung | | | | | | 152 | 0.1 | 0.0 |
| | Centre | | | | | | 88 | 0.1 | 0.0 |
| | DVU | | | | | | 67 | 0.0 | |
| | BüSo | | | | | | 26 | 0.0 | 0.0 |
| | MLPD | | | | | | 22 | 0.0 | 0.0 |
| | PSG | | | | | | 22 | 0.0 | 0.0 |
| Informal votes | Informal votes | Informal votes | Informal votes | 2,271 | | | 1,682 | | |
| Total valid votes | Total valid votes | Total valid votes | Total valid votes | 154,607 | | | 155,196 | | |
| Turnout | Turnout | Turnout | Turnout | 156,878 | 71.8 | 6.3 | | | |
| | CDU gain from SPD | CDU gain from SPD | Majority | 3,717 | 2.4 | | | | |