SITARAM Yechury, general secretary of the CPI(M) wrote a letter to Sunil Arora, CEC, Election Commission of India on May 21, on the irregularities in the polling for 21-Diamond Harbour, Parliamentary Constituency(PC) in West Bengal. Below we reproduce that letter:I am writing to you with regard to the reports of large-scale irregularities in the poll conducted on May 19, in 21-Diamond Harbour, Parliamentary Constituency in West Bengal. Enclosed (Annexure – 1) is a letter submitted by the CPI(M) candidate for the constituency, Fuad Halim to the Returning Officer, 21 Diamond Harbour PC, whi