The 1958 St Helens by-election to the House of Commons of the United Kingdom was held on 12 June 1958.
It was held due to the vacation of the seat by the incumbent Labour Member of Parliament, Sir Hartley Shawcross.
[1] St Helens had been represented in Parliament by Sir Hartley Shawcross since the 1945 general election.
However he had become increasingly disillusioned with the Labour Party to the point where he was called by the journalist Bernard Levin "Sir Shortly Floorcross".
[5] Spriggs was contesting his second election after unsuccessfully standing for North Fylde three years earlier.