Not necessarily, it's very thin. (Also, Özdemir made it quite clear a week ago that Red-Green is first choice.)

The ARD and ZDF seat projections at the moment give the same number of seats to CDU and SPD, but ARD's would make either of them + Greens one short of majority, ZDF's would give those combinations a majority of one. If SPD's advantage in the final count will be worth one more seat, that one seat might make out the coalition majority.

_{*Lunatic*, n.
One whose delusions are out of fashion.}