 The IASL, although not the first organization to take up the dry crusade in Indiana, became a key force behind efforts at attaining passage of statewide prohibition in early 1917, and rallied state support for ratification of the Eighteenth Amendment to the U.S. Constitution in 1919.The IASL's success, under the leadership of Edward S. Shumaker, an ordained Methodist minister, made it a model for the League's other state organizations.Shumaker made clear to politicians he did not care whether they drank, but insisted they vote for dry laws or face defeated in the next election by dry voters.