Library Header Image
LSE Research Online LSE Library Services

Internet polls are regularly underestimating support for Hillary Clinton

Howell, Taylor, Stout, Christopher and Kline, Reuben (2016) Internet polls are regularly underestimating support for Hillary Clinton. USApp – American Politics and Policy Blog (22 Aug 2016). Website.

PDF - Published Version
Available under License Creative Commons Attribution Non-commercial.

Download (133kB) | Preview


Since the Republican and Democratic conventions in July, Hillary Clinton has experienced a poll ‘bounce’, to lead Donald Trump by about 8 percent, especially in telephone polls with live interviewers. Internet polls, by contrast, tend to show Clinton leading by only 2 or 3 percent. Are these internet polls underestimating Clinton or overestimating Trump? Using results from the 2016 presidential primaries to assess state polls’ accuracy, Taylor Howell, Christopher Stout and Reuben Kline find that that internet polls were slightly more likely to overestimate support for Trump than live interviewer polls, and that they were likely to underestimate support for Clinton by nearly 2 percent. They suggest that online polls may still have some ways to come in terms of accuracy and may be skewing away from Clinton by offering a “don’t know” option to those who are as yet unwilling to commit to voting for her.

Item Type: Online resource (Website)
Official URL:
Additional Information: © 2016 The Authors, USApp – American Politics and Policy Blog, The London School of Economics and Political Science © CC BY-NC 3.0
Divisions: LSE
Subjects: J Political Science > JA Political science (General)
J Political Science > JK Political institutions (United States)
Date Deposited: 09 Feb 2017 16:38
Last Modified: 16 May 2024 08:27

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics