evidence: Politics in Northern Ireland has always been framed upon unionist versus nationalist divisions. Power-sharing between unionists and nationalists is mandatory in the devolved Executive and Assembly. Yet, according to the 2019 ESRC Northern Ireland election study, 40% of Northern Ireland's electors say they are neither unionist nor nationalist, compared to only 27% identifying as unionist and 25% as nationalist. [...] By analysing the demography and views of non-voters, voters and party members who eschew unionism and nationalism, we will achieve a far better understanding of Northern Ireland's understudied third tradition, numerically its largest but the least researched. We will analyse several different types of elector rejecting unionism and nationalism: [...] c) non-unionist and non-nationalist electors are the 'swing' voters who need to be won by unionists or nationalists in any future border poll on Northern Ireland's constitutional future, permitted under the Good Friday Agreement.