New Delhi-UPA Chairperson Sonia Gandhi hosted a dinner of 20 opposition parties at her residence in New Delhi.The dinner hosted by Mrs Gandhi is expected to set the tone for opposition unity in the run-up to the next general elections.Those attending the dinner include Sharad Pawar of NCP, Ram Gopal Yadav of Samajwadi Party, D Raja of CPI, Mohd. Salim of CPI (M), Sudip Bandyopadhyay of TMC, Kanimozhi of DMK, and Tejasvi Yadav of RJD.