Did Jefferson or Madison understand Condorcet's theory of social choice?

We therefore conclude that, despite their contacts with Condorcet, neither Jefferson nor Madison understood his exposition of social choice. We have examined all the known primary documents which appear to bear on the question, none of which shows any hint that either Jefferson or Madison understood the social choice components of Condorcet's work. This is so even though Jefferson was a close friend, intellectual soulmate, and collaborator with Condorcet. Madison, though less close to Condorcet's, also knew him and his work. He was less warm than Jefferson to Condorcet's political ideas. In particular, the unicameralism which Condorcet derived from his political theory and advocated in hisNew Haven Letters was anathema to Madison who at the time was writing theFederalist Papers and was using the unicameral Pennsylvania legislature as a dreadful example of the evils of populist democracy. Black's (1958) conclusion that Nanson in 1882 was the first English speaker to understand Condorcet on social choice therefore remains intact, despite hints to the contrary in current literature.