, the
Erie County Democratic leader Murphy's friend and benefactor, Edward Hagan, failed to achieve the Tammany Hall nomination for district assemblyman in 1883, which led Hagan to attempt an independent campaign. Murphy quickly replaced Croker as boss of Tammany Hall. Because of his stance, he is credited with transforming Tammany into a political organization capable of drawing the votes of the ever-growing numbers of new immigrants from Eastern and Southern
Europe, which kept Tammany in power until the early 1930s.
New York Contracting and Trucking Croker made money through "honest graft." New York Contracting and Trucking was awarded a $6 million contract in 1904 to build rail lines in the Bronx for the
New York, New Haven, and Hartford Railroad. An executive at the railroad said the contract was awarded to avoid friction with Tammany Hall. In response to the contract, the
New York State Legislature amended the city's charter so that franchise-awarding power was removed from the city board of aldermen and given to the Board of Estimate and Apportionment, which existed until 1989. By 1905, New York Contracting and Trucking had collected over $15 million in city contracts.
Louis N. Hartog business While the United States was at war in 1918, Murphy was receiving income from a firm owned by the businessman Louis N. Hartog in exchange for Murphy's arranging the Corn Products Refining Company to sell Hartog's firm
glucose. Hartog would then use the glucose to manufacture malt dextrin, an ingredient in beer. After investing $175,000 in Hartog's firm, Murphy was gaining $5,000 a day from the arrangement. In light of the ongoing war, the unfavorable light it would direct towards Tammany, and the amount of money Murphy received, which he considered too much, Murphy attempted to withdraw from the business. Hartog sued Murphy in response, but Murphy countersued and the case was settled. ==Political influence==