North Down is one of the most overwhelmingly unionist parts of Northern Ireland, with nationalist parties routinely getting no more than 5% of the vote, if that. In the 1955 election George Currie, the Ulster Unionist candidate, gained 96.8% of the popular vote, which he "bettered" in 1959 with some 98%. These shares of the popular votes are the highest ever achieved in a United Kingdom general election (post 1832 Reform). However it has arguably the most volatile and unpredictable politics of the entire province. Whereas elsewhere there are effectively three fundamental battles fought in elections – between the Ulster Unionist Party and the Democratic Unionist Party to be the leading unionist party, between the Social Democratic and Labour Party and Sinn Féin to be the leading nationalist party, and between unionism and nationalism as a whole, North Down is different. The lack of any substantial nationalist vote renders the last two battles immaterial. Of Northern Ireland's five main parties, only the Ulster Unionist Party and the Alliance Party of Northern Ireland have historically had a significant organisation and support in the constituency, though the Democratic Unionist Party has recently started to gain a foothold where previously it was nearly non-existent.