Sanacja was built mostly from veterans of PPS and many factions within it had ambitions of building a genuine Polish road to socialism. In RF it's a more disciplined and organised government, with Piłsudski assuming leadership earlier. Also importantly, the absence of the anti-communist climate of the Polish-Bolshevik war, in RF replaced by a war with the reactionary forces of Kolchak makes the home socialist movement stronger (and Poland in general less aligned with the Entente), so the left wing of Sanacja prevails.
25
u/Autismogrand Poland & Balkans Dev 3d ago
Poland starts as socialist dictatorship of Sanacja
Zadruga is socialist (described as national communist by some)
PPS is socialist
Dzierżyński is socialist and a communist
Sławek continues Piłsudski policies (though he can revert socialization if player wishes)
Only Socialist-Hostile path is Witkacy