The most honest political ad in American history.
(click ad, from 1916, via) Proud lantern-jawed Democrat, town unknown. Frank Streat. Man of the Street. He'll shoot himself in the leg or arm to show you his red blood. Update: It appears honest Frank served as police commissioner in Genesee County, Michigan. No luck on the "Frank R. Streat sheriff" search (sad face).
Previously in: funny political advertising.