Rae Bareli: Congress President Sonia Gandhi will file her nomination papers for the Rae Bareli Lok Sabha seat on April 2. Gandhi will file her papers here on April 2, her representative Kishori Lal Sharma said here on Thursday. She will seek re-election from the seat on the issue of development, Sharma said, adding that a large number of schemes had been launched for the development of the area in the past 10 years.