Amroha, April 04 (ANI): The demand for caps bearing symbols of leading political parties has picked-up ahead of Lok Sabha Polls as politicians are distributing the poll merchandise to supporters during campaigning. With polls just round the corner, the cap industry in Amroha district of Uttar Pradesh is witnessing a boom. Caps of leading political parties - red-coloured caps of Samajwadi Party (SP), blue caps of Bahujan Samajwadi Party (BSP) and white and saffron caps of Aam Aadmi Party and Bharatiya Janata Party (BJP) respectively - with party’s election symbol are being manufactured to cash in the popularity of leaders and parties. There are some people who have been involved in this business for generations.