When Kansas was admitted to the Union in 1861, he became secretary of the first state Senate and state senator in 1862. During the
Civil War, he served as judge advocate in the Kansas militia. As an editor of the Atchison newspaper, ''Freedom's Champion'', for three years, he won a national reputation for a series of magazine articles. Elected to the
U.S. Senate in 1873, succeeding
Samuel C. Pomeroy, Ingalls served for 18 years. He supported labor and agriculture against monopolies. He also favored the
Interstate Commerce Act and the
Pendleton Civil Service Act. Ingalls rejected the nomination of
James Campbell Matthews to the recorder of deeds in 1886. Ingalls claimed that his rejection was because of Matthews' non-residency of Washington, D.C.; however, journalists argued that his rejection was racially based. In 1887 Ingalls was elected
president pro tempore of the Senate. ==Death==