As of the 2021 federal election, it comprises the district of Westerwaldkreis and, from the district of Rhein-Lahn-Kreis, the Verbandsgemeinden of Aar-Einrich, Diez, and Nastätten, and the municipalities of Attenhausen, Dessighofen, Dienethal, Dornholzhausen, Geisig, Hömberg, Lollschied, Misselberg, Nassau, Obernhof, Oberwies, Pohl, Schweighausen, Seelbach, Singhofen, Sulzbach, Weinähr, Winden, and Zimmerschied from the Bad Ems-Nassau Verbandsgemeinde.

Originally, the constituency comprised the districts of Oberwesterwaldkreis, Unterwesterwaldkreis, Unterlahnkreis, and St. Goarshausen.

The constituency has been held by the Christian Democratic Union (CDU) during all but two Bundestag terms since its creation.

Willi Peiter of the Social Democratic Party (SPD) was elected in 1972 and served a single term.

Rudolf Scharping of the SPD was elected in 1998 and served a single term.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.

Yellow background denotes an electorate win by a list member, or other incumbent.