The last Demo I have no suspicion of being a closet Commie was Harry Truman. Harry getting that VP spot in 1944 over Wallace was an amazing stroke of luck for the US because Wallace would have taken a hard left turn in 1945 upon becoming President when FDR died. After Harry, the rest have been clearly Socialist, i.e. Commie-lite.
Even old “tickled pink” Hubert H. Humphrey?