How the AP-GfK poll on the candidates’ health was conducted

The Associated Press-GfK poll on health and the presidential race was conducted by GfK Public Affairs and Corporate Communications Sept. 15-19. It is based on online interviews of 1,694 adults, including 1,476 registered voters and 1,251 likely voters, who are members of GfK’s nationally representative KnowledgePanel.

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How the AP-GfK poll on the candidates’ health was conducted