After the
1886 general election, he was asked by the Liberal association in
Stamford to contest the seat against the sitting
Conservative MP,
John Compton Lawrance. He was in America at the time, but it was expected that he would accept the invitation; and first stood for
Parliament himself at the
Stamford by-election in 1890, after Lawrance
resigned his seat in order to become a
High Court judge. and took up residence in the constituency. His nomination was signed by farmers, tradesmen, and working men. Polling took place on 7 March, and when the votes were counted at the Corn Exchange in
Bourne on Saturday 8 March, Priestley lost to the Conservative
Henry Cust by a margin of 282 votes (3.4% of the total). with a majority of only 38 votes (1.4%). and held the Grantham seat until the
1918 general election, He was a
Justice of the Peace (JP) for Grantham and for
Lincolnshire, and served as
Mayor of Grantham from 1914 to 1917. His residence was listed in 1918 as Hungerton Hall, Grantham. == Cricket ==