Complex sentence: The declaration reflected the evolution of the party from socialism to a more moderate form of social democracy and Keynesian economics since its founding during the Great Depression as well as the increased pragmatism which coloured the party since taking power in the province of Saskatchewan.
Split into simpler sentences: The declaration reflected the evolution of the party from socialism to a more moderate form of social democracy and Keynesian economics since its founding during the Great Depression. It also reflected the increased pragmatism that coloured the party since taking power in the province of Saskatchewan.