PolitiFinder

1840 Delaware Gubernatorial Election

Delaware · 2 candidates · See every 1840 Governor race

Who won the 1840 Delaware Gubernatorial Election?

William B. Cooper won the 1840 Delaware Gubernatorial Election. William B. Cooper received 5,850 popular votes (53.8%). The main challenger was Warren B. Jefferson (46.2%).

See the full head-to-head between Cooper and Jefferson

Cooper +7.6 pts · won by 826 votes
William B. CooperWhig PartyWINNER53.8%
5,850 votes
Warren B. JeffersonDemocratic46.2%
5,024 votes
Popular-vote totals for governor elections are compiled from official state results (via Wikipedia); Louisiana shows the decisive round of its jungle primary.

Data last verified July 28, 2026.