Newly appointed Communities Minister Deirdre Hargey barely had her feet under the desk before Fianna Fáil leader Micheál Martin was complaining about her appointment. The West Belfast MLA was in Magennis’s bar in central Belfast the night in January 2005 when Robert McCartney was stabbed and beaten to death. Photograph: PA

Sinn Féin’s surge in the opinion polls has raised questions about how it would perform in government were Fine Gael or Fianna Fáil to reverse their st(...)