Opinion surveys are usually an opinion that already exists in a population, like: habits, opinions, evaluation of institutions, activities, expectations, conditions of life, customs, customer satisfaction, personal or corporate behavior and other aspects as:

 

• Habits, attitudes and opinions
 

• Public services demand diagnostic
 

• Institutional image / authorities studies
 

• Personal image and products studies
 

• Social issues diagnostic
 

• Government evaluation
 

• Effectiveness of government programs studies
 

• Electoral preference studies
 

• Exit polls (exit poll)