The 48th Illinois General Assembly met from 1913 to 1915. Barratt O'Hara of Chicago was the Lieutenant Governor of Illinois and thus ex officio President of the Senate.[a]Walter I. Manny was President pro tempore of the Senate. William B. McKinley of Chicago was the Speaker of the House of Representatives.
Districts
Illinois was divided into 51 districts, each of which elected one Senator and three Representatives. Districts were last reapportioned in 1901[1] and would not be reapportioned again until 1947.[2]