Complex sentence: On the constituency's creation in 1983, Andy Stewart won it for the Conservatives with a majority of just 637-this result was considered an upset in what had hitherto been considered a safe Labour area.
Split into simpler sentences: On the constituency's creation in 1983, Andy Stewart won it for the Conservatives with a majority of just 637. This result was considered an upset in what had hitherto been considered a safe Labour area.