1903 Argyllshire by-election

[1] The constituency returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system.

Donald Ninian Nicol had been Conservative MP for the seat of Argyllshire since the 1895 general election.

[4] The local Liberal Association selected 59-year-old John Stirling Ainsworth as their candidate to gain the seat.

Ainsworth contested the Barrow-in-Furness constituency at the 1886 general election and Argyllshire in 1900.

The Liberals gained the seat from the Conservatives; At the following General Election the result was;