I think that come election day, the Social Democrats will have a turnout problem. That's how it is with governments presiding over high unemployment. They often perform decently in polls, but turnout collapses on election day (see: Jimmy Carter election of 1980).
The Europeans, to include the Germans, are just too enamoured with socialism to break away from it. No matter the evidence that marxist/socialist economics are a disaster, the Europeans just can't pry themselves away from the dream.
Europe is in serious decline. A selfish, live for today attitude tied with an unwillingness to confront Islamic radicalism or any potential foe for that matter, means Europe as a Western power is finished. Unfortunantly, this means things will continue deteriorating with the Europeans utterly unwilling or unable to change course. The reaction will be that extreme parties will start to make headway - both right and left.
Socialism as an economic and social model is poison to the human spirit. It's draw is like heroin - to both intellectual classes and the ingorant masses. It should very specifically be written out of our, and every other, constitution.