PLUS: How Pew Research Center estimated the number of unauthorized immigrants in Europe.
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Pew Research Center | Methods

Methods

November 19, 2019
#%22https://www.pewresearch.org/methods/2019/11/19/a-field-guide-to-polling-election-2020-edition/


** A field guide to polling: Election 2020 edition ([link removed])
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While survey research in the United States is a year-round undertaking, the public’s focus on polling is never more intense than during the run-up to a presidential election. In Pew Research Center's new field guide ([link removed]) , our survey methodologists and social science researchers assess the state of the craft in 2019. Building on our previous field guide to polling ([link removed]) , this edition discusses the performance of election polls in 2016, how technology has affected polling, how to tell "good" polls from "bad" and other frequently asked questions.
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#%22https://www.people-press.org/2019/10/23/national-politics-on-twitter-small-share-of-u-s-adults-produce-majority-of-tweets/


** National politics on Twitter: Small share of U.S. adults produce majority of tweets ([link removed])
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As part of its ongoing research exploring public opinion on Twitter, Pew Research Center’s Data Labs published an analysis ([link removed]) examining the political tweeting habits of the 22% of the American public ([link removed]) that uses Twitter. Researchers conducted a survey of 2,427 U.S. adults with public Twitter accounts and analyzed the more than 1.1 million tweets the respondents produced over a one-year period. They also used a machine learning model to classify each of these tweets as related to national politics or not, to help explore which Twitter users were most drawn to tweeting about national politics.
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#%22https://www.pewresearch.org/fact-tank/2019/11/15/qa-how-pew-research-center-estimated-the-number-of-unauthorized-immigrants-in-europe/


** Q&A: How Pew Research Center estimated the number of unauthorized immigrants in Europe ([link removed])
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In a November report ([link removed]) , Pew Research Center estimated the size of Europe’s unauthorized population. In this accompanying Q&A and video ([link removed]) , Senior Researcher Phillip Connor and Senior Demographer Jeffrey S. Passel describe the variety of methods and data sources used to arrive at these estimates, as well as the challenges they faced in conducting the analysis.
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** Why public opinion polls don’t include the same number of Republicans and Democrats ([link removed])
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Newcomers to polling sometimes assume that if you are asking Americans questions about politics, it’s only fair to include an equal number of Republicans and Democrats. While this notion makes some sense on the surface, it’s based on a misunderstanding of what polling is intended to do. As explained in a Fact Tank blog post ([link removed]) , the goal of a national political survey isn’t to artificially even the playing field. It’s to represent groups in their actual proportions within the country. And a wide range of evidence shows that there are more Democrats than Republicans in the United States today.
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** Who is Hispanic? ([link removed])
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Debates over who is Hispanic and who is not have fueled conversations about identity among Americans who trace their heritage to Latin America or Spain. So, who is considered Hispanic in the United States? And how are they counted in public opinion surveys, voter exit polls and government surveys like the upcoming 2020 census? On our Fact Tank blog ([link removed]) , Pew Research Center demographers explain our approach for determining who is Hispanic.
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** New on Decoded ([link removed])
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Pew Research Center’s Decoded ([link removed]) blog focuses on the “how” behind our numbers. The blog features content ranging from survey methods, to data science, to data visualization, and allows researchers to build on and engage with our work. Explore some of our latest posts:
* When the unexpected happens, what’s a survey researcher to do? ([link removed])
* 5 tips for writing about polls ([link removed])
* Exploring the link between European political parties' ideology and their popularity on Twitter ([link removed])
* Interpreting and validating topic models ([link removed])

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** Featured Datasets
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** Pew Research Center makes its data available to the public for secondary analysis after a period of time. All of the Center’s available datasets can be downloaded here ([link removed]) , and select datasets follow. See this post ([link removed]) for more information on how to use our datasets and contact us at [email protected] with any questions.

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** 2017 Pew Research Center STEM Survey ([link removed])
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Survey conducted July 11–Aug. 10, 2017, among 4,914 U.S. adults.


** Spring 2018 Survey on Factual and Opinion Statements in the News ([link removed])
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Survey conducted Feb. 22–March 4, 2018 among 5,035 U.S. adults.


** American Trends Panel Wave 35 (algorithms and tech companies) ([link removed])
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Survey conducted May 29–June 11, 2018 among 4,594 U.S. adults.

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