My headcanon of political parties in the Spartakus ending
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DSKI (Deutscher Sektion der Kommunistische Internationale) (Stalinism/Bolshevism/whatever the CPSU feels like) - They are one of the Two Parties surged after the split of the Original KPD in 1939, with them being the Section that chose to remain within the Comintern, and thus, under the USSR's influence. Their leadership and postures generally change depending on what the CPSU wants them to do, but generally they advocate for a transformation to a pure "Dictatorship of the Proletariat", wanting centrally planned economics, weakening of the local Räte, mass collectivizations of agriculture, and the suppression of all other variants of socialism, aswell as the expulsion of the "Reactionary Religious and quasi-capitalist Parties" (aka CSU+RRSP). Thus, they are the most reluctant to work with the rest of Parties.
UKPD (Unabhängige Kommunistische Partei Deutschlands) (Left Luxemburgism/maybe Right Communism) - They are the slightly more moderate part of the KPD that split off, and chose to leave the Comintern, fully committing themselves to keeping the homegrown version of Socialism, being particularly fond of the local Räte, seeing themselves as the continuation of Rosa Luxemburg's and Karl Liebknecht's movement. Although they are against the inclusion of the CSU, RRSP and SVP in politics, they are somewhat willing to work with the DSKI, SDAV, PDS and even the DAGV if necessary.
PDS (Partei den Demokratisches Sozialismus) (Center Socialism/Right Luxemburgism) - This is us. We are the Main successor party of the former SPD, after the after the Reformists split in 1938, and Unions split apart in 1943. We then renamed ourselves to SAPD in 1945, and again to the current name in 1972. We are the traditional Government and compromise party in our Nation, seeking to largely maintain the current system in place, and maintain stability within the nation, while allowing for some reforms depending on who we're working with. We are willing to work with most parties, although we have historically seen the RRSP and CSU with suspicion.
DAGV (Deutsche Arbeitergewerkschaft Verein) (Laborism/Syndicalism) - They are the Trade Union wing of the former SPD, and support what some would consider a slightly more "Revisionist" version of our system, with them being more concerned with economic and practical issues, aswell as somewhat being the rivals of the Räte, regarding them as "inefficient" and "bureaucratic", and thus prefering worker cooperatives instead.
SVP (Sozialdemokratische Volkspartei) (Reformist Socialism/Market Socialism) - They used to be the Right, Reformist or Revisionist wing of the SPD, and fully support a transformation away from Council system, and just like the DAGV, advocating for more cooperatives though they seek to expand it more, aswell as a degree of private ownership, pursuing an economic model with similarities to Lenin's NEP and Market Socialism, and are the most in favor of cooperation with the CSU and RRSP
CSU (Christliche Sozialistische Union) (NOT RELATED WITH OTL) (Christian Socialism) - They started off as the far-left Wing of the Zentrum Party, who led by Joseph Wirth and Jakob Kaiser, chose to atleast tolerate the Socialist transformation instead of opposing it, though many Parties are still distrustful of them. In policy they are divided between the Left wing, closer to the SVP, and right, closer to the RRSP, though with the difference that they happen to be more socially conservative than both of them, opposing the historically quite secular policies of the other parties, and advocating for Religious and "Moral" revival.
RRSP (Radikal-Republikanischer und Sozialistische Partei) (Liberal Socialism/Social Corporatism) - They are the furthest right *legal* party in our country, and favor policies such as opening to privatization, interesting further into western capitalist markets, and expanding worker coops, räte, and bourgeois-owned industry, allowing all three to coexist, in "social corporatist model" where councils, unions, and employers negotiate under the Government's moderation. They also want the inclusion of Even further right groups into the nation, such as Social Liberals, Classical Liberals and even Christian Democrats.
IMPORTANT: This is not meant to be taken seriously as plausible Alternate History, i made up most of ideologies and policies that these parties would have, and thus do not line up with what would seem "realistic" or "correct". I only made this for fun.