In the Chicago mayoral election of 1846, Whig nominee John P. Chapin defeated Democratic nominee and Liberty nominee Philo Carpenter by a landslide 22 point margin.
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Follansbee, a former Chicago alderman from the 1st ward,[1] 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.[2]
Chapin was also a former alderman from the 1st ward.[1]