The 1840 Chicago mayoral election saw Democrat Alexander Loyd defeat incumbent Whig Benjamin Wright Raymond by a landslide 15.8% margin.
With a narrative that local elections such as Chicago's would be a bellwether of the coming 1840 United States presidential election, both parties locally viewed the election as being of geat importance.[1] Chicago's mayoral result, ultimately, was no bellwether of the presidential election's party outcome.