Sonia Gandhi noted that the party could not win even a single seat in many states and emphasized that the setback in the polls should not be allowed to negate "very far-reaching and enduring achievements of the Congress-led UPA government.""Your role in that exercise will be crucial and I invite you to participate in it in the days ahead. I have been asked by the CWC to undertake whatever steps necessary to revamp the party organization at all levels," she said.