The by-election was caused by the death of the sitting Conservative MP Tom Hooson (a cousin of the former Liberal MP for Montgomery Emlyn Hooson). The Conservatives held the seat with a majority of over 10,000, however the government encountered problems and the election developed into a three way contest with Labour, which had held the seat before 1979, fighting hard to win it back. When the result was declared after a recount, Livsey emerged as the victor by 559 votes over Labour with the Tories slipping to third place. Livsey remained an MP (apart from 1992-97 when the Tories recaptured the seat) until he retired in 2001.