Much has been written about Bahujan Samaj Party chief Mayawati's inventive politics that saw her forging an unlikely alliance between Dalits and Brahmins -- from the two ends of the Hindu caste spectrum -- to win an election in Uttar Pradesh in 2007.

She did this with a promise to widen the appeal of her party beyond her traditional Dalit voters and bring Brahmins and other upper castes into her programme of all-round development.

As proof, she gave tickets to scores of Brahmins in 2007 and appointed a Brahmin (Satish Misra) as her chief adviser and strategist.

The move paid rich dividends, securing an absolute majority for her party in a state that last saw single-party rule almost two decades ago.

It also bolstered the chances of her party in the general election. She began being spoken of as a potential prime minister.