In a virulent attack on BJP, Congress President Sonia Gandhi today said the Lok Sabha polls are vital to safeguard cherished national ideals like "unity and secularism" which were under threat.

"2014 is the most important election because it's about what kind of India you want. Idea of India is under threat by those who don't just seek to rule but to change India's very heart and soul," Gandhi said addressing a special convention of the Congress workers from across Kerala.