Polish 1922 elections: 35 Jews (10%, about percentage of Jews in general population), of which 6 Agudas Isroel, incl R Shapiro. Apparently, he worked on his Polish a lot, not just Daf Yomi, while serving in Seim.
In 1922, 65% of Jews voted for minority parties, in 1928 – only 33%, 49% for Pilsudski’s block, 7% for Communists. 44% of Orthodox Xians voted for Commies. 16% of majority Catholics voted for Pilsudsky, 45% for left, 15% for right, 4% for Commies