Complex sentence: He served as member of the State house of representatives 1836-1838, as member of the Whig National Convention at Harrisburg, Pennsylvania, in 1839, Whig presidential elector in 1840 and was an unsuccessful candidate for election to the Twenty-seventh Congress in 1840.
Split into simpler sentences: He served as member of the Whig National Convention at Harrisburg, Pennsylvania, in 1839. He was an unsuccessful candidate for election to the Twenty-seventh Congress in 1840.