May-2011-political-survey.zip

Sample & Design:

N=1,509 adults, conducted May 25–30, 2011

Interviews conducted via landline and cell phone RDD

Includes cell-only households and dual users (landline + cell)

Weights:

WEIGHT → Main weight for all landline + cell interviews (use for most analyses; standard Pew reports use this)

LLWEIGHT → For landline sample only (excludes cell interviews)

COWEIGHT → For landline sample + cell-only households (excludes dual-users from cell sample)

Geographic coding:

Since Fall 2008, Pew has used self-reported ZIP codes to generate region, state, and county variables (more accurate than sample-based geographic info, especially for cell sample).

If ZIP code not provided/matched, sample-based info is used.

Original sample geography variables (prefixed with “s”) are retained only for archival use.

Privacy protections:

Telephone numbers, county of residence, and ZIP codes have been removed from the dataset.