I think he referred to FDP, which replaced the SPD.
Currently, Germany has a coalition of CDU + SPD which will become a coalition of CDU + FDP.
Currently, Germany has a coalition of CDU + SPD which will become a coalition of CDU + FDP.
(Anyway, every party in Germany is a socialdemocratic party in some sense.)
The FDP (free democratic party) had its best showing at a federal election ever, with around 15% of the vote. (So did the socialist party with around 12% or so.)
(Note: I'm an American that's been living in Germany for the last 7.5 years.)