SDLP challenged to back referendum on Irish unity

The nationalist SDLP was challenged today to say whether it would back a post-election referendum on Irish unity.

Sinn Féin general secretary Mitchel McLaughlin, who is engaged in a fierce battle with the SDLP’s leader Mark Durkan for the Foyle House of Commons seat, called on his rivals to demonstrate their support for a united Ireland by demanding a border poll.