No reputable polling firm relies on landlines alone anymore, and this poll is no different:
AARP commissioned the bipartisan polling team of Fabrizio Ward & Impact Research to conduct a survey. The firms interviewed 1,399 likely Wisconsin voters, which includes a statewide representative sample of 500 likely voters, with an oversample of 550 likely voters age 50 and older and an additional oversample of 349 Black likely voters age 50 and older, between September 18-25, 2022. The interviews were conducted via landline (30%), cellphone (35%), and SMS-to-web (35%). The margin of sampling error for the 500 statewide sample is ±4.4%; for the 855 total sample of voters 50+ is ±3.4%; for the 400 total sample of Black voters 50+ is ±4.9%.
Due to rounding, answer choices may not always add up to 100%. Data is specified in the report that it is among either the 18+ or 50+ universe. Partisan crosstabs in this report represent how people identify their partisan affiliation when asked, not how they are modeled on the voter file.
Link:
https://www.aarp.org/content/dam/aarp/research/surveys_statistics/politics/2022/aarp-wisconsin-2022-elections-voter-survey.doi.10.26419-2Fres.00550.017.pdf
Note that going to the link will download a PDF file that has not only the methodology, but also all of the questions and responses.
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