State governments in India are not powerful, and they never have been! The constitution of India grants much more power to the Central Government than it does to the State Governments. The BJP government has pushed the boundary of federalism again and again. Here are some concrete examples:
1. Denial of statehood to Jammu and Kashmir.
2. Using the Centre-appointed governor to take down the Govt. of Maharashtra.
3. Constant pushback on policies and appointments made by the Govt. of Delhi.