1974–1983: The Boroughs of Ballymena, Carrickfergus, and Larne, the Urban Districts of Ballycastle, Ballymoney, Portrush, and Whitehead, the Rural Districts of Ballycastle, Ballymena, and Ballymoney, and in the Rural District of Larne the electoral divisions of Ardclinis, Ballycor, Carncastle, Eden, Glenarm North, Glenarm South, Glencloy, Glynn, Islandmagee North, Islandmagee South, Kilwaughter, Middle Division, Raloo, and Templecorran.

From 1886 to 1974 the Conservative and Unionist members of the United Kingdom House of Commons formed a single Parliamentary party.

Unusually for Ireland, the Liberal Party retained significant strength in this constituency after the split over Home Rule in 1886.

Although the Unionists regained the seat when the sitting MP retired, the constituency was one of very few Unionist/Liberal marginals in Ireland at both 1910 elections.

This is the longest continuous period for which the current holding party has held any Northern Irish seat.

In elections at all levels, the DUP have frequently had their highest share of the vote in North Antrim and have rarely been seriously challenged.

[1] Former DUP MEP Jim Allister announced that he would contest the constituency for the Traditional Unionist Voice.

The petition was signed by 9.4% of the electorate, short of the 10% required to unseat Paisley Jr and trigger a by-election.

The Member of Parliament since the 2024 general election is Jim Allister of the TUV, after the DUP lost the seat for the first time since gaining it in 1970 as the Protestant Unionist Party.