The 1912 Illinois lieutenant gubernatorial election was held on November 5, 1912. Incumbent first-term Republican lieutenant governor John G. Oglesby was defeated by Democratic nominee Barratt O'Hara.
The 1912 Illinois lieutenant gubernatorial election was held on November 5, 1912. Incumbent first-term Republican lieutenant governor John G. Oglesby was defeated by Democratic nominee Barratt O'Hara. (en)