 Late in the 1870s, he entered into partnership in a banking and brokerage business in St. Paul, Minnesota.He lived in Le Sueur until 1888, when he sold out his local interests, and moved to St. Paul, where he continued with his banking concerns.Doran was chairman of the Minnesota Democratic State Central Committee on numerous occasions and was chairman of the National Democratic Committee from 1888 to 1896, when he resigned over differences with his party on bimetallism.