The Lord Advocate in 1933 was Sir Craigie Mason Aitchison, K.C., M.P., and so he was appointed to the bench, automatically resigning his seat.
Aitchison had been elected as a member of the Labour Party in a 1929 by-election following the death of Robert Climie.
Prominent Scottish Unionist and cabinet minister Walter Elliot wrote a letter endorsing Lindsay and urging voters to support him.
The Duke of Montrose, one of the leaders of the Scottish Party, made a prominent speech in support of MacEwan in Kilmarnock during the campaign.
During this speech he addressed the issue of the position of Scottish home rule in relation to the Irish in Scotland While he stated that he had "nothing but friendly feelings for the Irish", he added that when Ireland achieved Home Rule, "Scottish men and women were disenfranchised" and stated "as they did to us we should do to them and others.