More or less true but with a major caveat - about 90% of the voters cast their ballots for parties that either supported moderate liberal reforms or radical ones. While I'm sure that plenty of those did so for other reasons, I am very skeptical about the idea that there is a mandate for truly left wing economic policies.  That makes it virtually impossible to get a left wing government in Germany since for both principled and pragmatic reasons it makes no sense for the Linke to join a coalition, even if that weren't unthinkable for other reasons.  

I also don't see a move to the left in terms of voting as opposed to parliamentary representation. Add up the percentages received by the PDS/WASG, SPD, and Greens in this election and the previous one and the numbers are identical - the SPD lost 4.2%, the Greens 0.5% and the Linke picked up 4.7%. On the right we see a net decline of 0.9%