These polls have stopped since the accusation of partisanship have become too loud. The last one was in 2010. Still the past reveals a lot and it is safe to assume that since then the composition of journalists has moved further to the left.
The Greens (Grüne) had almost 40% support when they were a junior partner in a coaltion with the Social Democrats (SPD) in 2006. After that they lost favors to the communist party LINKE, i.e. the party that ran the Eastern German dictatorship. More journalists are under the illusion that they had no proclivities because the public voices became more and more samish anyway.
Merkel’s party The Union (CDU/CSU) polls on par with the pseudo-libertarians (FDP) at about 10%. Until 2006 it was fair to call The Union a conservative party. Since then they don’t pursue a single conservative policy goal anymore, which is why their support grew again in 2010. I’m sure that it has gone through the roof since. In the general public the development takes the opposite direction and The Union is massively losing ground in the polls. Here are the graphs comparing the surveys with the general public (the diamond symbol).
All the graphics in this post come from Robert Nitsch.