From left-wing to right-wing:
Bremen
Berlin
Hamburg
Saarland
Lower Saxony, Schleswig-Holstein, Hesse, Nordrhein-Westfalen, Brandenburg
=== German average ===
Rhineland-Palatinate
Mecklenburg-Vorpommern, Saxony-Anhalt (it's not 2002 anymore)
Baden-Württemberg
Thuringia
Bavaria, Saxony
Exact positions are discutible. The Eastern states are generally more idiosyncratic, but since the emergence of the AfD they have been more right-wing than before.
Why would Brandenburg be more left-wing than other eastern states?