With four days to go for polling in Delhi, Prime Minister Narendra Modi spared neither the Congress or the Aam Aadmi Party his scathing criticism at a rally in North Delhi's Rohini today, but the meat of his attack was reserved for Arvind Kejriwal, seen by the BJP as the man to beat in these elections. "Those who posed as Mr Clean are exposed as dishonest today," Mr Modi said referring to what the BJP has dubbed ""hawala at midnight," adding "Rajiv Gandhi tried to show that he was Mr Clean but there was corruption...Our country can forgive mistakes, but not betrayal."