After being elected to the New York state senate as an Anti-Mason, he became governor as a Whig.
After being elected to the New York state senate as an Anti-Mason, he became governor as a Whig. As a senator, he attacked slavery on the grounds of a "higher law" than the Constitution, and declared that the issue would be an "irrepressible conflict  " between the North and South. FTP, identify this politician, shot by Lewis Powell in 1865, who acquired the Danish West Indies and Alaska for the U.S. as secretary of state.
After being elected to the New York state senate as an Anti-Mason, he became governor as a Whig.
William Henry Seward