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.

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).

Geography 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.

History 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.

Election Name Borders 1949 Siegkreis Siegkreis district 1953 70 1957 1961 1965 64 Siegkreis I – Bonn-Land Landkreis Bonn district Siegkreis district (only Bad Honnef, Königswinter, Niederkassel, Troisdorf, and Sankt Augustin municipalities) 1969 1972 1976 1980 Rhein-Sieg-Kreis I Rhein-Sieg-Kreis district (only Eitorf, Hennef (Sieg), Lohmar, Much, Neunkirchen-Seelscheid, Niederkassel, Ruppichteroth, Siegburg, Troisdorf, and Windeck municipalities) 1983 1987 1990 1994 1998 2002 98 2005 2009 2013 97 2017 2021 2025 96

Members 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, 2021 and 2025.

Election Member Party % 1949 Peter Etzenbach CDU 37.2 1953 64.8 1957 65.4 1961 Georg Kliesing CDU 59.1 1965 61.8 1969 54.8 1972 52.6 1976 Franz Möller CDU 55.6 1980 Adolf Herkenrath CDU 46.6 1983 54.8 1987 49.6 1990 46.0 1994 Andreas Krautscheid CDU 45.8 1998 Uwe Göllner SPD 44.6 2002 44.2 2005 Elisabeth Winkelmeier-Becker CDU 45.5 2009 44.9 2013 49.6 2017 44.3 2021 32.6 2025 35.6

Election results 2025 election

2021 election

2017 election

2013 election

2009 election

2005 election

References