Washington, DC, June 10, 2019 – These are findings from an Ipsos poll conducted May 29-30, 2019 and June 5-6, 2019 on behalf of Thomson Reuters. For the survey, a sample of roughly 2,237 adults age 18+ from the continental U.S., Alaska and Hawaii was interviewed online in English. The sample includes 1,972 registered voters, 815 Democratic registered voters, 659 Republican registered voters, and 400 Independent registered voters.
The sample for this study was randomly drawn from Ipsos’s online panel (see link below for more info on “Access Panels and Recruitment”), partner online panel sources, and “river” sampling (see link below for more info on the Ipsos “Ampario Overview” sample method) and does not rely on a population frame in the traditional sense. Ipsos uses fixed sample targets, unique to each study, in drawing sample. After a sample has been obtained from the Ipsos panel, Ipsos calibrates respondent characteristics to be representative of the U.S. Population using standard procedures such as raking-ratio adjustments. The source of these population targets is U.S. Census 2016 American Community Survey data. The sample drawn for this study reflects fixed sample targets on demographics. Post-hoc weights were made to the population characteristics on gender, age, region, race/ethnicity and income.
Statistical margins of error are not applicable to online non-probability polls. All sample surveys and polls may be subject to other sources of error, including, but not limited to coverage error and measurement error. Where figures do not sum to 100, this is due to the effects of rounding. The precision of Ipsos online polls is measured using a credibility interval. In this case, the poll has a credibility interval of plus or minus 2.4 percentage points for all respondents (see link below for more info on Ipsos online polling “Credibility Intervals”). Ipsos calculates a design effect (DEFF) for each study based on the variation of the weights, following the formula of Kish (1965). This study had a credibility interval adjusted for design effect of the following (n=2,237 DEFF=1.5, adjusted Confidence Interval=3.9).
The poll also has a credibility interval of plus or minus 2.5 percentage points for registered voters, plus or minus 3.9 percentage points for Democratic registered voters, plus or minus 4.4 percentage points for Republican registered voters, and plus or minus 5.6 percentage points for Independent registered voters (see link below for more info on Ipsos online polling “Credibility Intervals”).
For more information about Ipsos online polling methodology, please go here http://goo.gl/yJBkuf
For more information on this news release please contact:
Vice President, U.S.
Ipsos Public Affairs
Annaleise Azevedo Lohr
Senior Account Manager, U.S.
Ipsos Public Affairs
Ipsos is a global independent market research company. Our team of 18,000 across 90 countries serves 5,000 clients and undertakes 70,000 different projects each year. Our polling practice is a non-partisan, objective, survey-based research practice made up of seasoned professionals. We conduct strategic research initiatives for a diverse number of American and international organizations, based not only on public opinion research, but elite stakeholder, corporate, and media opinion research.
As a global research and insights organization, Ipsos aims to make our changing world easier and faster to navigate and to inspire our clients to make smarter decisions. We are committed to driving the industry with innovative, best-in-class research techniques that are meaningful in today’s connected society. We deliver research with security, speed, simplicity, and substance. Our tagline “Game Changers” summarizes our ambition.
Our broad range of industry experts offer an intimate understanding of people, markets, brands and society. Whether testing communications content, bringing concepts to market, assessing customer experience, or gauging public opinion, Ipsos strives to identify and offer the right solutions to our client’s specific challenges.
Ipsos is committed to building an organization dedicated to a single endeavor: providing our clients with the best service, using qualitative or quantitative methods, at local, regional, and international levels. This is what drives us to ask and probe, to subject our hypotheses to rigorous analyses, and, finally, to deliver reliable data and the most effective recommendations in the shortest time possible.
Ipsos has been listed on the Paris Stock Exchange since 1999 and generated global revenues of €1,749.5 million in 2018.
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