በዚህ ምዕራፍ ውስጥ ያሉ አብዛኛዎቹ ጭብጦች በቅርብ ጊዜ በፕሬዝዳንታዊው የአሜሪካ የህዝብ አስተያየት ምርምር (AAPOR) እንደ ፕሬዚዳንት Dillman (2002), Newport (2011), Santos (2014) እና Link (2015).
Mitu yambiri ya m'mutu uno inafotokozeretsanso maulendo a pulezidenti ku American Association of Public Opinion Research (AAPOR), monga a Dillman (2002), Newport (2011), Santos (2014), ndi Link (2015).