 Young Poale Zion was launched in Bethnal Green in 1928, by Sam Dreen.Poale Zion and Dov Hoz played a crucial role in the 1930 Whitechapel and St Georges by-election, swinging the Jewish vote behind the non-Jewish Labour candidate, James Henry Hall, rather than the Jewish Liberal candidate Barnett Janner.In the 1940s, Poale Zion (Great Britain) claimed a membership of nearly 2,000.