Maybe, just like the BSW filled an open gap in the German party spectrum on the right side, there might be a similar gap to fill on the left side of the spectrum. If for example the youth organizations of the current Ampel parties would drop out and form a new party, that is more liberal than the

FDP (in terms of citizen rights), more social than the SPD (how hard can that be?) and more radical than the Greens regarding CO2, they might catch a similarly huge amount of voters out of the blue in urban regions as the BSW did in the countryside.