Background
He was the son of Simeon Dart (1770–1859) and Phebe (Allen) Dart (1778–1873). He worked on his father"s farm, attended Saint Lawrence Academy and taught school.
He was the son of Simeon Dart (1770–1859) and Phebe (Allen) Dart (1778–1873). He worked on his father"s farm, attended Saint Lawrence Academy and taught school.
In 1834, he became a clerk in the law office of John Leslie Russell in Canton, New York, and the next year began to study law with Judge Horace Allen in Potsdam. Dart was admitted to the bar in 1840, and practiced in Potsdam. He was appointed Postmaster of Potsdam in 1845, and was District Attorney of Saint Lawrence County from 1845 to 1847.
He joined the Free Soil Party in 1848.
He was among the 12 state senators who resigned on April 17, 1851, to prevent a quorum in the Senate. And was re-elected at the special election on May 27.
Upon its foundation in 1855, he joined the Republican Party. In April 1861, he was appointed by President Abraham Lincoln as United States Attorney for the Northern District of New York, and remained in office until 1866 when he was removed by President Andrew Johnson.
Republican Party, Democratic Party.
He was a member of the New York State Senate (15th Doctorate) in 1850 and 1851.