About the Survey
A Pre-Poll Survey was conducted in Karnataka by Lokniti, Centre for the Study of Developing Societies (CSDS) for ABP News. The survey was conducted from April 27 through May 3, 2018 among 4929 voters in 224 locations (polling stations) spread across 56 assembly constituencies (the State has a total of 224 assembly constituencies). The sampling design adopted was multi-stage random sampling. The assembly constituencies where the survey was conducted were randomly selected using the probability proportional to size method. Thereafter, four polling stations within each of the sampled constituencies were selected using the systematic random sampling method. Finally, the respondents were randomly selected from the electoral rolls of the sampled polling stations.
Before going to the field for the survey, field investigators were imparted training about the survey method and interviewing techniques at a day-long training workshop held in Bengaluru. The field investigators conducted face-to-face interviews of the respondents in Kannada asking them a set of standardized questions. The duration of an interview was about 35 minutes. At some locations the non-availability of sampled respondents or difficulty in finding households necessitated replacements or substitutions.
The achieved raw sample is quite representative of Karnataka’s population profile. It has nevertheless been weighted by gender, locality, religion, and caste group based on Census 2011. The poll has an overall margin of error of plus or minus 2 points. The error margin increases for cross-tabulations.
Profile of Achieved Sample in Karnataka
|Survey Sample (raw)%||Census 2011 %|
The fieldwork of the survey was coordinated by Dr. Reetika Syal of JAIN (Bengaluru) and Dr. Veena Devi of Bangalore University. The survey was designed and analyzed by Prof. Sandeep Shastri, Prof. Sanjay Kumar, Prof. Suhas Palshikar, Dr. Reetika Syal, Dr.Veena Devi, Mr. Himanshu Bhattacharya and Mr. Shreyas Sardesai.
Survey details in a nutshell
|Conducted by||Lokniti-CSDS for ABP News|
|Dates of fieldwork||April 27 to May 3, 2018|
|No. of Assembly Constituencies covered||56|
|No. of Polling Stations (Locations) covered||224|
|No. of interviews of voters conducted (Sample size||4929|
|Overall Margin of Error||+/- 2|
|Sampling method||Multi-stage random sampling|