Two and a half weeks before the election, the SPD - a social-democratic party that last governed as part of a coalition from 2005 to 2007, when it won 23.5% of the vote - has climbed from 25% to 26%, according to the current INSA opinion trend in collaboration with YouGov for the Bild newspaper.
The CDU - the country's main conservative party, currently joined in a governing coalition with the CSU and led by Angela Merkel - holds its earnings from the previous week, remaining at 39 %.
The liberal FDP loses a point and could end up with just under 5% in the Bundestag. Support for Germany's Green Party also fell a point to 13% after falling a point just last week. Democratic socialist party The Left meanwhile has climbed from 7% to 8%. The alternative for Germany and the pirates remain unchanged at three per cent.
Mathematically possible are still a grand coalition of CDU and SPD, a red-red-green coalition of SPD, Greens and Left. Also possible would be even a Jamaica coalition (CDU, FDP, Greens) and black-green.
The current government in Germany consists in a coalition between the Christian democratic parties (CDU and CSU) and the FDP.
The INSA opinion trend is a representative survey of the German population. In collaboration with YouGov interviewed 2,000 Germans are every weekend. The results of the INSA opinion trends appear regularly on Wednesday in the Bild newspaper.
For more information, see insa-meinungstrend.de .
Picture: AP