Downpatrick was a United Kingdom Parliament constituency in Ireland, returning one MP. It was an original constituency represented in Parliament when the Union of Great Britain and Ireland took effect on 1 January 1801.
Stooks Smith suggests that after the 1806 election there was a petition, which led to Edward Southwell Ruthven (Whig) being unseated and John Wilson Croker {Tory} being declared duly elected. Walker does not make any reference to such a petition.
Walker (like F. W. S. Craig in his compilations of election results for Great Britain) classifies Tory candidates as Conservatives from 1832. The name Conservative was gradually adopted as a description for the Tories. The party is deemed to be named Conservative from the 1835 general election.
Walker (like F. W. S. Craig in his compilations of election results for Great Britain) classifies Whig, Radical and similar candidates as Liberals from 1832. The name Liberal was gradually adopted as a description for the Whigs and politicians allied with them, before the formal creation of the Liberal Party shortly after the 1859 general election.
The Parliaments of England by Henry Stooks Smith (1st edition published in three volumes 1844–50), 2nd edition edited (in one volume) by F.W.S. Craig (Political Reference Publications 1973)
Walker, B.M., ed. (1978). Parliamentary Election Results in Ireland, 1801–1922. Dublin: Royal Irish Academy. ISBN0901714127.