WHY has Sinn Féin seriously underachieved in two Dáil elections in the past five years? You might argue that in absolute terms, the party's increased vote makes its performance creditable. But relative to other groups, it has performed poorly. Look at the figures. In 2011, in the greatest social and economic crisis since the Famine, the Fianna Fáil (FF) vote collapsed, losing 57 seats. Fine Gael (FG) gained an extra 25 seats. Labour gained 17. In this electoral earthquake, Sinn Féin (SF) gained 10 new seats. But Independents gained nine, to pu[...]