Complex sentence: In 1980 she challenged three-term, incumbent 7th District congressman Democrat, Andrew Maguire, and won, one of several Republicans swept into office by Reagan's coattails.
Split into simpler sentences: In 1980 she challenged three-term incumbent Democrat Congressman Andrew Maguire, and won in what was then the 7th District. She was one of several Republicans swept into office by Reagan's coattails.