The 1986 South Antrim by-election included a candidate from which Northern Irish unionist party?
South Antrim by-election, 1986:  The MPs, from the Ulster Unionist Party, Democratic Unionist Party and Ulster Popular Unionist Party, did this to highlight their opposition to the Anglo-Irish Agreement. Democratic Unionist Party: The Democratic Unionist Party is a unionist political party in Northern Ireland.
i don't know