DR. Jonathan Silas Zwingina represented Adamawa South Constituency in the Senate between 1999 and 2007 on the platform of the Peoples Democratic Party (PDP).  In this interview, he said that the face-off between the PDP National Chairman, Alhaji Bamanga Tukur and the rebelling governors within the party, was borne out of the urge by Tukur to fight the culture of impunity practised by some state governors. He also said that President Goodluck Jonathan had no agreement with the North over 2015, adding that the North has never formed a common front in any election. Excerpts: