The red-greens, and especially S and MP, have moved towards the center to capture the voters who are said to be torn between the bourgeois and the red-green bloc.
But perhaps now left-wing politics can claim victory. The SD voters are often ordinary working or unemployed citizens who feel that S & M do not care about the problems of ordinary people anymore, but only about the well-being of Capital and the RUT-using class.
Say that half of the SD voters actually have red-green sympathies but felt dissatisfied with the centrist policies of S & MP. Then the red-greens would easily claim victory if they invested in a more classic gap-balancing left-wing politics.