An entry on the Whoa! Canada blog claims that the mixed-member proportional (MMP) electoral system Germany uses was an imposition of the allied occupational authorities.
For those who don’t know, at the end of Second World War the victorious Allies governments imposed Mixed Member Proportional Representation on West Germany.
They did this specifically to prevent the rise of another Hitler.
Further on, it makes a specific claim about the then British Prime Minister, in a bold subheading of a section that actually does not even try to elaborate on its claim:
Winston Churchill knew Proportional Representation was a defence against fascism.
This is all very fanciful. The allied occupation authorities did not “impose” MMP on Germany, and the British in particular favored reverting to Germany’s pre-Weimar majoritarian system, as did the Americans. MMP was a product of compromise among the various German parties and the American, British, and French occupation governments.
The (unsourced) claim that Churchill saw PR as a bulwark against fascism is especially creative. At the time, PR was widely (if inaccurately) seen as responsible for the rise of the Nazis. If anything in the German system was adopted to be a bulwark against fascism, it was the 5% threshold–the very most non-proportional feature of the system to this day.
For a good overview of the adoption of MMP in Germany, see Susan E. Scarrow, “Germany: The Mixed-Member System as a Political Compromise,” in Matthew S. Shugart and Martin P. Wattengerg, eds., Mixed-Member Electoral Systems: The Best of Both Worlds? Oxford University Press, 2001.