Opportunities in Northern Ireland?

A poll in the Irish Times reveals that a cross community majority in Northern Ireland want the backstop and are dissatisfied with the DUP and Sinn Fein (the first for its anti EU position, and the second for not turning up to Westminster at all).  I would have thought that represented a gaping opportunity for the Labour and Cooperative parties to contest elections in the North as an avowedly non-sectarian alternative in favour of the European Union and a continuing free border.