a) Name of the institution or person that ordered and paid the survey

b) Name and the seat of the institution that conducted the survey, 

c) Size of the sample and a possible tolerance in the survey results

d) The period in which the survey was conducted.

(2) Results of a telephone public opinion research or street poll conducted among voters during the campaign shall not be presented as a reliable or trustful opinion of a particular social group, which must be particularly emphasized by the media that conducts the survey and announces results.