Complex sentence: He has been the chairman of the Philadelphia Democratic Party since winning election to that position in June, 1986, and a member of the Pennsylvania Turnpike Commission from 1991 until his election as Congressman.
Split into simpler sentences: He has been the chairman of the Philadelphia Democratic Party since winning election to that position in June, 1986. He was a member of the Pennsylvania Turnpike Commission from 1991 until his election as Congressman.