Scottish Labour’s Michael Shanks has won the Rutherglen and Hamilton West byelection in an overwhelming victory over the SNP that the party leadership declared “seismic”, and a clear demonstration that Scotland could lead the way in delivering a Labour government at Westminster at the coming general election.

In a result that exceeded Scottish Labour expectation, Shanks beat his closest rival, the SNP’s Katy Loudon, by 17,845 votes to 8,399 – a majority of 9,446 and a resounding swing of over 20%.