Reply #31: That is no longer his position, although it is the position of the national

[pnwmom]

association of pollsters, and I agree with it: weighting by party shouldn't be done, because party affiliation is fluid.


But Zogby now weights by party. This is from the Zogby site:

http://www.zogby.com/methodology/readmeth.dbm?ID=1366

Survey Methodology 10/24/08 thru 10/27/08

Zogby International was commissioned by to conduct a telephone survey of .

The sample is <1202 likely voters> interviews with approximately <25> questions asked. Samples are randomly drawn from telephone cd’s of national listed sample. Zogby International surveys employ sampling strategies in which selection probabilities are proportional to population size within area codes and exchanges. Up to six calls are made to reach a sampled phone number. Cooperation rates are calculated using one of AAPOR’s approved methodologies<1> and are comparable to other professional public-opinion surveys conducted using similar sampling strategies.<2> Weighting by is used to adjust for non-response. The margin of error is +/- 2.9 percentage points. Margins of error are higher in sub-groups.