It elected one Member of Parliament (MP) by the first past the post voting system.
[2] In 1918 Dornoch and Wick were merged into Caithness and Sutherland, Kirkwall into Orkney and Shetland and Cromarty, Dingwall and Tain into Ross and Cromarty.
The franchise was extended to wider groups of the population than under the old system of burgh councillors electing a burgh commissioner to participate in the election.
From 1832 the votes from each burgh were added together to establish the result.
Laing resigned after being appointed a member of the Council of India, causing a by-election.