AMRITSAR: A day before filing his nomination papers, Congress party's Gurdaspur Lok Sabha by-election candidate Sunil Jakhar challenged all the major political opponents for an open debate on the issue of performance of Congress government in the state. September 22nd, is the last date for filing of nomination papers. His wife Tripta Kumari also filed nomination papers as a covering candidate. Earlier on September 19th an independent candidate Pardeep Kumar had also filed his nomination papers. Suresh Khajuria filed his nomination papers on Thrusday ..