In 1835, those parts of Michigan Territory who were not set to become part of the new State of Michigan were invited to elect members to a
seventh and last Michigan Territorial Council (the so-called "Rump Council"). Walker was elected from Milwaukee County, but was one of the four (out of thirteen) who did not attend the "Rump Council" when it met (briefly) in January 1836. Walker served in the first three sessions of the 4th Legislative Assembly of the
Wisconsin Territory, serving from 1842 to 1845, and was speaker for the 2nd and 3rd sessions. He was elected to the
Wisconsin State Assembly in 1850, serving in the
3rd Wisconsin Legislature. Walker also served as the city's supervisor, register of the land office, alderman, and as mayor in 1851 and 1853. He was one of the builders of the city's first
street car line in 1859, and was invested in the
Milwaukee and Mississippi Railroad, the Milwaukee and Watertown Railroad, and the La Crosse and Milwaukee Railroad.
Electoral history ==Family life==