Can DUP attract Catholic votes? Gregory Campbell and Seamus Close discuss #BBCNolan

The DUP can attract Catholic votes because of its stance on issues like gay marriage and abortion. That's the claim being made by senior DUP figures. But is it true? Catholics switching to Peter Robinson's party could turn politics here on its head. The DUP claim is made in a major new book on the party, and is featured on the front page of today's Belfast Telegraph. DUP's Gregory Campbell and commentator Seamus Close discuss