If the Reservation System is changed from Caste based to Income based criteria, by changing the Constitution of India, Narendra Modi will get 95 % seats for BJP in Gujarat, and BJP will get majority all over India too.
Only why 35 % seats go to other than BJP is due to this Indian system. Sri Babasaheb Bhimrao Ambedkar had planned to implement caste based reservation system only from 1951 to 1960, and only if needed it may be extended for further 10 years. He had not thought to keep it for such 70 or 80 years. Main hurdle to 90 % BJP votes is this system only.