Last spring, a year ahead of the election now gripping India, Amit Shah was dispatched by Mr Modi to Uttar Pradesh with instructions to build support for the Bharatiya Janata Party (BJP), in the nation’s largest and politically most-important state. He set about identifying candidates and meeting local leaders in an effort to deliver Mr Modi the "wave" he will need to become India’s next prime minister. But while Mr Shah has cemented support for Mr Modi, he has also run into problems. Over the weekend, one week into the five-week voting process to elect a new government, the Election Commission (EC) banned Mr Shah from addressing public meetings in the state, and ordered that charges be filed against him after he was accused of stoking communal tensions.

