From March 9-17, 2009, IRI fielded a national public opinion poll in Serbia.

The poll field work was conducted by Strategic Marketing Research based in Belgrade, Serbia.  Oversight and analysis was provided by David Williams of Williams & Associates of Salem, Massachusetts and IRI.

The research was conducted by face to face interviews in respondents’ homes.

The research was conducted using a sample of 2,458 respondents older than the age of 18.

Maximum sampling error for the entire sample is +/- 2.02 percent.

The population under study is representative of Serbian population older than 18 years by gender, age, education, settlement size and region (see below for demographic breakdown)

The poll surveyed a nationwide random, three-stage, stratified representative sample.  The primary sampling units were polling station territories chosen with probability proportional to size, sampled by cumulative, Lachirie method; secondary sampling units were households chosen with simple random sampling without replacement, sampled with random choice of the starting point and equal steps of choice; tertiary sampling units were respondents sampled by Kish scheme.  First level strata were eight regions and second level strata were two types of settlement, urban and rural.

Respondents were disqualified if they were younger than 18 years of age and if they or any member of their close family was employed at a newspaper, television station, radio station or political party.

Survey response rate was 61 percent.

Demographic Breakdown