During much of the early 1900s, the Jewish population in Borough Park, and Brooklyn as a whole, was part of a much more liberal-leaning voting block. However, many of these early Jewish families moved to the suburbs or other places around the city, while more conservative Hasidic Jews (many of them survivors of the Holocaust and immigrant families from Eastern Europe) joined their neighborhoods. As a result, the overwhelming majority of the Hasidic population in Borough Park and Brooklyn introduced a more traditional Jewish religious lifestyle. A 2002 study by the UJA Federation-New York revealed that only 2% of Borough Park's Jews identified themselves as Reform Jews, and nearly three-fourths identified themselves as Orthodox Jews.