Lokniti in collaboration with CNN IBN and The Week conducted a Post Poll Survey in the states of Assam, Kerala, Tamil Nadu and West Bengal.

A total of 3348 persons in Assam, 3133 in Kerala, 4617 in Tamil Nadu and 5166 in West Bengal randomly selected from the latest electoral rolls were interviewed few days after the voting in sampled Polling Stations spread across randomly selected Assembly constituencies in the state. The Assembly Constituencies were selected using the Systematic Random Sampling technique

Within each selected assembly constituency, 4 polling booths were randomly selected using the Systematic Random Sampling technique. The respondents were selected from the updated electoral rolls of the selected polling stations. Keeping in mind, the probability of non completion of interviews amongst all the selected respondents, for several reasons (Non contact, refusal etc) we adopted the technique of over sampling of respondents. No substitution was allowed for those respondents who could not be contacted or could not be interviewed.

The interviews were conducted by specially trained field investigators. Before sending investigators to the field for data collection, they were imparted two days intensive training in survey research and data collection. The respondents were interviewed in the face-to-face interview situation using a structured interview schedule translated in to the respective state languages Assamese, Malayalam, Tamil and Bengali. Respondents were mostly interviewed at their home with few exceptions of respondents being interviewed at their work place. Effort was made to interviews there respondents alone to allow him greater confidence in expressing his opinions on various issues and to ensure to the maximum possible extent, secrecy of his responses. The voting question was asked using a dummy ballot paper and dummy ballot box to ensure top most secrecy about this voting preference.

These are details of the spread of the sample and sample profile

The sample profile: How Representative is the Sample?

Census figures are from 2001 Census for every state

• The Assembly constituencies in all the states were randomly selected using the Systematic Random Method
• Polling station (locations) within each selected assembly constituency were selected using the Systematic Random Method
• Voters were selected using the systematic random method, from the updated electoral rolls of the selected polling booths.
• The voters were interviewed few days after the voting, in the face to face interview situation mostly at their home or at their work place using a structured Interview Schedule translated in local language.
• The field investigators, mostly students were imparted training in survey research before being sent for data collection

The survey was designed and analysed by a team of researchers at Centre for the Study of Developing Societies, Delhi. Sanjay Kumar of the CSDS directed the survey. The fieldwork was coordinated by Sajjad Ibrahim (Kerala), Dhruba Sharma (Assam), G. Koteswara Prasad (Tamil Nadu) and Suprio Basu (West Bengal). The team that designed coordinated and analyzed the survey at CSDS comprised of Alok Satapathy, Banasmita Bora, Dhananjai Kumar Singh, Himanshu Bhattacharya, K.A.Q.A Hilal, Kanchan Malhotra, Rahul Verma, Shreyas Sardesai, Vibha Attri and Yogendra Yadav. Sanjay Kumar of the CSDS directed the survey.

Detail findings of the Studies are to be published in the forthcoming issue of the Economic and Political Weekly.

Questionnaires

Assam , Finding

Kerala

Tamil Nadu

West Bengal