AfD is far behind the CDU at a national level, and if the center left vote was united they would also be comfortably behind that hypothetical coalition. The problem is that with current opinion polls the government would probably need to be an equally unstable coalition between CDU, SPD, and Greens.
Were do you get your polls. Current average would be easily enough for CDU and SPD or Greens. So a two party coalition, which would probably work rather well. https://dawum.de/Bundestag/
AfD is far behind the CDU at a national level, and if the center left vote was united they would also be comfortably behind that hypothetical coalition. The problem is that with current opinion polls the government would probably need to be an equally unstable coalition between CDU, SPD, and Greens.
Were do you get your polls. Current average would be easily enough for CDU and SPD or Greens. So a two party coalition, which would probably work rather well. https://dawum.de/Bundestag/