Epicurus
Reasonable
The Socialist party wasn't killed because other parties adopted its policies. The other parties didn't start doing anything resembling that until around the thirties, and the Sociailst party was well on its way to death by 1920. I think the biggest things that contributed to the death of the Socialist party was its opposition to WWI and the fact that most of the active membership quit and joined the politically poisoned Communists when Lenin founded the Comintern around 1919.
THE SOCIALIST PARTY PLATFORM of 1912
http://www.sagehistory.net/progressive/SocialistPlat1912.htm
The adoption of a graduated income tax and the extension of inheritance taxes, graduated in proportion to the value of the estate and to nearness of kin-the proceeds of these taxes to be employed in the socialization of industry.
The conservation of human resources, particularly of the lives and well-being of the workers and their families:
By shortening the work day in keeping with the increased productiveness of machinery.
By securing for every worker a rest period of not less than a day and a half in each week.
By securing a more effective inspection of workshops, factories and mines.
By the forbidding the employment of children under sixteen years of age.
By the co-operative organization of the industries in the federal penitentiaries for the benefit of the convicts and their dependents.
By forbidding the interstate transportation of the products of child labor, of convict labor and of all uninspected factories and mines.
By abolishing the profit system in government work and substituting either the direct hire of labor or the awarding of contracts to co-operative groups of workers.
By establishing minimum wage scales.
By abolishing official charity and substituting a non-contributary system of old age pensions, a general system of insurance by the State of all its members against unemployment and invalidism and a system of compulsory insurance by employers of their workers, without cost to the latter, against industrial diseases, accidents and death.