India will spend billions of dollars on its general election this year, much of it illegally. Rahul Tandon visits a political rally in Kolkata where many participants have been paid to attend, while Ed Butler speaks to an 'election agent' tasked with recruiting those crowds, often for different political parties at the same time. James Crabtree, author of the book The Billionaire Raj, describes the extent of illegal election funding in India, and what can be done about it.

(Photo: BJP supporters at an election rally of Prime Minister Narendra Modi in Dehradun, India. Credit: Getty Images)