From Wikipedia..About the Bund electoral results. These numbers do not include non-relgious zionism or other non-relgious groups
In December 1938 and January 1939, at the last Polish municipal elections before the start of the Second World War, the Bund received the largest segment of the Jewish vote. In 89 towns, one-third elected Bund majorities.[15] [16] [10]
After its municipal electoral successes in December 1938 and January 1939, the Bund hoped for a breakthrough at the parliamentary elections due in September 1939, but these were de facto cancelled by the German-Soviet invasion.[10]