Congress President and UPA Chairperson Sonia Gandhi on Saturday launched the Congress campaign in Kerala and said the Lok Sabha polls are vital to safeguard cherished national ideals like unity and secularism which were under threat. "The choice is between India of all or India of some serving the interest of few. We want unity, they want uniformity. Our idea joins India together, their's divides," she said. "Our principal opposition will argue that after ten years of the UPA rule, it is time to change. I want to ask a change to what? Do the people of India really want to give up the long-cherished values for lies and untested promises," she said.