Conlon strongly believed that there was a need for a membership organisation linking nationalists in Northern Ireland. He pursued this theme during his campaign for the Nationalist Party in South Armagh at the Northern Ireland general election, 1945. During the campaign, which he fought against a Northern Ireland Labour Party incumbent, he stressed the importance of Christianity to Irish identity and contrasted this with what he described as the "flag of the communist Jew".
- Brendan Lynn, Holding the Ground: The Nationalist Party in Northern Ireland, 1945 - 72 (1997), ISBN 1-85521-980-8
- Graham Walker, A History of the Ulster Unionist Party
|Parliament of Northern Ireland|
|Member of Parliament for South Armagh
1945 – 1950