There is corruption in all the political parties. The fact is that one is less and the other is a little bit more. Corruption can be brought down only by the citizens of a country. If we all just become conscious and strictly move forward against corruption, only then it can be eradicated. What we Indians do is just blame others but that's not the solution and the truth.
And about secularism, nobody can ever turn India into a country of a specific religion. India was secular, India is secular and India will be secular.