evidence: This claim is accurate with consideration. The claim that three-quarters of non-voters in Northern Ireland are pro-Union is based on evidence from a research survey commissioned on behalf of the University of Liverpool. It found that 76.9% of respondents who did not vote in the 2019 General election and who stated a constitutional preference chose "to remain part of the UK". [...] During an episode of BBC Northern Ireland’s Spotlight programme, Professor Peter Shirlow claimed (at 24:55): "Three-quarters of people who don’t vote in Northern Ireland are pro-Union." This claim was made in the context of a discussion on the new leaders of two Unionist parties, the Democratic Unionist Party and the Ulster Unionist Party. [...] The figure relevant to this claim is found in a table in the survey report: "To Remain in UK or to reunify with Ireland by Voters and Non-Voters who state a preference". The table states that almost a third (31.1%) of all respondents who are non-voters gave a preference to one of the two constitutional choices. Of these non-voters in the survey, 76.9% chose the response, "To remain part of the UK".