Longford (UK Parliament constituency)

On petition, a House of Commons Select Committee inquiry disqualified 73 votes and declared Forbes and Lefroy the winners of the election.

On petition, a House of Commons committee inquiry disqualified 94 votes and declared Fox the winner of the election by a majority of 1.

On petition, a House of Commons committee began an inquiry into the votes cast for Luke White, but he withdrew his candidacy after 1 vote was examined and Lefroy was declared elected on 18 April 1842 .

White was appointed a Lord Commissioner of the Treasury, requiring a by-election.

O'Reilly was appointed Assistant Commissioner of Intermediate Education and resigned, causing a by-election.