DeWitt Clinton, whose name was almost always spelled De Witt during his lifetime and until the late 20th century, was an American politician and naturalist. He served as a United States senator, as the mayor of New York City, and as the seventh governor of New York. In this last capacity, he was largely responsible for the construction of the Erie Canal. Clinton was a major candidate for the American presidency in the election of 1812, challenging incumbent James Madison.