In the Chicago mayoral election of 1846, Whig candidate John P. Chapin defeated Democratic candidate Charles Follansbee and Liberty candidate Philo Carpenter by a 22 point margin.
Campaign
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Follansbee failed to garner the support of Irish Democrats, an important constituency for the Democratic Party in Chicago. These voters rejected him because he was a champion of the "Native American Act", which would require a period of 21 years of residency before any immigrant could become a naturalized citizen.[1]