The Knowsley South by-election, 1990
was a by-election
held on 27th September 1990
for the British House of Commons constituency
of Knowsley South
The by-election was caused by the death of the constituency's Labour Party Member of Parliament (MP) Sean Hughes on 25 June.
The result was a Labour hold, with Edward O'Hara winning a majority of over 11,000 votes.