The 1846 Connecticut gubernatorial election was held on April 6, 1846. Former congressman and Democratic nominee Isaac Toucey was elected, defeating former state legislator and Whig nominee Clark Bissell with 47.54% of the vote.
Although Bissell won a plurality of the vote, he did not win a majority. The state constitution at the time required that in such a case, the Connecticut General Assembly decides the election. The state legislature voted for Toucey, 124 to 117, and Toucey became the governor.
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Text from the Wikipedia article “1846 Connecticut gubernatorial election”, available under CC BY-SA 4.0.