Fact TankJanuary 11, 2017

Q&A: How Pew Research Center surveyed nearly 8,000 police officers

Read an interview with Senior Editor Rich Morin and Senior Research Methodologist Andrew Mercer, who were involved in our groundbreaking police officer survey.

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MethodsNovember 15, 2016

Video: Why 2016 election polls missed their mark

The results of the 2016 presidential election came as a surprise to nearly everyone who had been following the national and state election polling

Fact TankNovember 9, 2016

Why 2016 election polls missed their mark

There is a great deal of speculation but no clear answers as to the cause of the disconnect, but there is one point of agreement: Across the board, polls underestimated Trump’s level of support.

Media & NewsNovember 3, 2016

Civic Engagement Strongly Tied to Local News Habits

Americans who are highly attached to their communities and who always vote in local elections stand out for displaying stronger local news habits than those less engaged.

Fact TankNovember 2, 2016

Just how does the general election exit poll work, anyway?

The firm that runs the presidential exit poll expects to interview about 100,000 voters across the country by the time the polls close on election night.

Fact TankOctober 25, 2016

Oversampling is used to study small groups, not bias poll results

As oversampling and its possible effect on presidential polls are spotlighted ahead of Election Day, learn more about this practice and how pollsters adjust for it.

Fact TankOctober 17, 2016

Putting post-debate ‘flash polls’ into perspective

In the aftermath of presidential debates, there is intense interest in gauging “who won.” How can we know the answer to that question?

September 29, 2016

The Racial Confidence Gap in Police Performance

Blacks and whites in the U.S. disagree over police performance and differ on the causes of fatal encounters between blacks and police.

Fact TankSeptember 20, 2016

Measuring illegal immigration: How Pew Research Center counts unauthorized immigrants in the U.S.

Jeffrey S. Passel, senior demographer, on the research techniques used to derive the unauthorized immigrant population estimate in the U.S. and the challenges involved.

Fact TankSeptember 8, 2016

5 key things to know about the margin of error in election polls

Some of the better-known statistical rules of thumb that a smart consumer might think apply in polls are more nuanced than they seem. In other words, as is so often the case in life, it’s complicated.