Out of State, Out of Sample?

… Without getting actual location data from telephone companies or sampling cellphones nationwide, pollsters are forced to ignore people who move into a given state with an out-of-state cell number. …

Pew Research notes that approximately 10 percent of cellphone respondents live in a different state than their area code implies. Even a pollster willing to pay a premium to call cellphones would miss these people in a geographically targeted survey. [cont.]

Daniel Hopkins, Georgetown (themonkeycage.org)