Four top Congress ministers have reportedly written to party president Sonia Gandhi asking to be allowed to resign and do more party work, sources have said. Of the names doing the rounds, Law Minister Salman Khurshid is learnt to have written to Mrs Sonia Gandhi offering to step down post the Congress' Uttar Pradesh electoral debacle, owning moral responsibility. Mr Khurshid is expected to meet Sonia Gandhi at her 10 Janpath residence this evening.