In 1989, Bahr was one of the founding members of the Social Democratic Party in the GDR in Neuruppin.
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From 1990 to 2005 he was chairman of the SPD subdistrict Ostprignitz-Ruppin and 1992-1994 deputy chairman of the SPD in Brandenburg.
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In the election of 16 January 2005 Bahr was the SPD candidate for the office of Mayor of Neuruppin.
Ernst & Young | Max Ernst | Ernst Haeckel | Ernst Mayr | Ernst Jünger | Ernst Zündel | Bahr el Ghazal | Matt Bahr | Ernst Gombrich | Ernst Mach | Ernst Ulrich von Weizsäcker | Ernst Moritz Arndt | Ernst Lubitsch | Ernst Bloch | Karl Ernst von Baer | Heinrich Wilhelm Ernst | Ernst & Young Entrepreneur of the Year Award | Ernst van de Wetering | Ernst Toller | Ernst Thälmann Pioneer Organisation | Ernst Röhm | Ernst of Schaumburg | Ernst Ludwig Kirchner | Ernst Ludwig Gerber | Ernst Heinrich Weber | Ernst Hanfstaengl | Ernst Haefliger | Ernst Detlof von Krassow | Ernst Cassirer | Ernst |