After his return from the Egyptian campaign, Dickson became a candidate for Linlithgow Burghs in 1802, on the strength of his interest at Peebles. He offered to retire in favour of the 3rd Duke of Buccleuch’s intended nominee the sitting Member, Lord Stopford. News reached Buccleuch that ‘a noble duke’s promise for some easy government’ for Dickson, who wished to sell out of the army, would do the trick. In the event, Buccleuch decided to back Dickson, who was stronger than Stopford, to keep off the challenge of William Maxwell, the Whig candidate, and he was returned by three votes to one. He promised to meet Buccleuch’s wishes ‘on any future occasion’ and made it clear that he wished ‘to make use of his seat merely to get a postie’.
Dickson was listed a supporter of Addington’s administration, who however would prefer Pitt as minister ‘against every person whatever’.
