Don't know enough BritPol to know how horrified I should be, but this is what I imagine the U.S. equivalent to be (with apologies to @Ulysses Orbis, who had a similar concept but went Full-On Dystopia instead of OTL But Kind Of Shit).
For those unfamiliar with German politics: the FDP candidates range from former Nazis organised in the "Naumann circle" (who planned a nationalist restoration in the early 1950s) to hardcore monetarists of today. The Greens retain both their eco-fascist right-wing and "Fundi" hard left-wing. The PDS/Left is more old-school Leninist, including candidates with dubious anti-Zionist leanings.
1949-1963: Hans Globke (CDU/CSU) 1949 def. Karl Kleikamp (SPD), Friedrich Middelhauve (FDP)
1953 def. Erwin Schoettle (SPD), Werner Naumann (FDP)
1957 def. Erwin Schoettle (SPD), Werner Naumann (FDP)
1961 def. Herbert Hupka (SPD), Werner Best (FDP)
1963-1966: Franz-Josef Strauß (CDU/CSU) 1965 def. Herbert Hupka (SPD), Werner Best (FDP)
1966-1969: Theodor Oberländer (CDU/CSU)
1969-1974: Herbert Hupka (SPD) def. Theodor Oberländer (CDU/CSU), Siegfried Zoglmann (FDP)
1972 def. Waldemar Kraft (CDU/CSU), Siegfried Zoglmann (FDP)
1974-1982: Wolfgang Abendroth (SPD) 1976 def. Alfred Dregger (CDU/CSU), Erich Mende (FDP)
1980 def. Franz Handlos (CDU/CSU) , Erich Mende (FDP)
1982-1998: Alfred Dregger (CDU/CSU) 1983 def. Erhard Eppler (SPD), Erich Mende (FDP), Herbert Gruhl (Greens)
1987 def. Peter von Oertzen (SPD), Herbert Gruhl (Greens), Jürgen W. Möllemann (FDP)
1990 def. Ottmar Schreiner (SPD), Manfred Brunner (FDP), Hans Modrow (PDS), Herbert Gruhl (Greens)
1994 def. Ulrich Maurer (SPD), Rainer Zitelmann (FDP), Jutta Ditfurth (Greens), Hans Modrow (PDS)
1998-2005: Oskar Lafontaine (SPD) def. Alfred Dregger (CDU/CSU), Hans-Christian Ströbele (Greens), Konrad Adam (FDP), Hans Modrow (PDS)
2002 def. Günther Beckstein (CDU/CSU), Hans-Christian Ströbele (Greens), Hans-Olaf Henkel (FDP), Inge Höger (PDS)
2005- : Erika Steinbach (CDU/CSU) def. Oskar Lafontaine (SPD), Hans-Christian Ströbele (Greens), Hans-Olaf Henkel (FDP), Norman Paech (PDS)
2009 def. Andrea Nahles (SPD), Hans-Olaf Henkel (FDP), Ottmar Schreiner (The Left), Jürgen Reents (Greens)
2013 def. Thilo Sarrazin (SPD), Hans Modrow (The Left), Antje Niewisch-Lennartz / Jürgen Reents (Greens), Frank Scheffler (FDP)