Senator and Governor Approval Rankings Q3 2017 Methodology

Morning Consult surveyed 255,120 registered U.S. voters from July 1 to Sept. 30, 2017 , to determine the latest Senator and Governor Approval Rankings.

In each poll, Americans indicated whether they approve or disapprove of the job performance of President Donald Trump, their state’s governor, both of their U.S. senators, their member of Congress and their mayor (if they live in a city with more than about 10,000 residents). For each question, they could answer strongly approve, somewhat approve, somewhat disapprove, strongly disapprove, or don’t know / no opinion.

Morning Consult obtained an up-to-date list of governors, senators and representatives from Sunlight Foundation’s Congress API v3 and Open States API and obtained a list of mayors from the United States Conference of Mayors. Survey respondents were assigned to their appropriate governor and senators based on their state of residence, assigned to their member of Congress based on a combination of zip code, IP address, latitude and longitude, and assigned to their mayor based on their state and zip code.

Morning Consult obtained population parameters for registered voters from the November 2012 Current Population Survey. We applied post-stratification weights based on gender, age, educational attainment and race.

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