Haley Barbour, former chairman of the Republican National Committee

HARDtalk's Stephen Sackur is in Washington DC to talk to a former chairman of the Republican National Committee, Haley Barbour. With every passing week the race for the Republican Party's presidential nomination becomes more bizarre and more bitter. According to one Republican senator the fact that Donald Trump and Ted Cruz are the two leading candidates is proof that the party has gone crazy. We ask - what on earth has happened to the Republicans?