I am an Associate Professor of Political Science at the University of Copenhagen and Center for Social Data Science. I am also a faculty research affiliate at the Center for Social Media and Politics at NYU, where I was a post-doctoral researcher after I received my PhD from the University of Toronto. I research political behavior, social media, and quantitative methods.

Publications

News Sharing on Social Media: Mapping the Ideology of News Media, Politicians, and the Mass Public
Political Analysis. Conditionally accepted.
(with Richard Bonneau, Joshua Tucker, and Jonathan Nagler)
Statistical software, Software vignette

The Unequal Effects of the COVID-19 Pandemic on Political Interest Representation
Political Behavior. 2024, 46 (1).
(with Anne Rasmussen)

Do Violent Protests Affect Expressions of Party Identity? Evidence from the Capitol Insurrection
American Political Science Review. 2023, 117 (3).
(with Frederik Hjorth and Peter Thisted Dinesen)

Exposure to the Russian Internet Research Agency Foreign Influence Campaign on Twitter in the 2016 US Election and its Relationship to Attitudes and Voting Behavior
Nature Communcations. 2023, 14 (62).
(with Tom Paskhalis, Jan Zilinsky, Richard Bonneau, Jonathan Nagler, and Joshua Tucker)

Does International Terrorism affect Public Attitudes toward Refugees? Evidence from a Large-scale Natural Experiment
Journal of Politics. 2022, 84 (1).
(with Charles Breton)

Measuring Uncertainty about Candidate Ideology: An Application to US Presidential Elections
Journal of Politics. 2021, 83 (2).
(with Peter Loewen)

Cross-Platform State Propaganda: Russian Trolls on Twitter and YouTube during the 2016 US Presidential Election
International Journal of Press/Politics. 2020, 25 (3).
(with Yevgeniy Golovchenko, Cody Buntain, Megan Brown, and Joshua Tucker)

Presidential Greatness in a Polarized Era: Results from the Latest Presidential Greatness Survey
PS: Political Science & Politics. 2020, 53 (3).
(with Brandon Rottinghaus and Justin S. Vaughn)

How Many People Live in Political Bubbles on Social Media? Evidence from Linked Survey and Twitter Data.
SAGE Open. 2019, 9 (1).
(with Jonathan Nagler, Andrew Guess, Joshua Tucker, and Jan Zilinsky)

Statistical Analysis of Misreporting on Sensitive Survey Questions.
Political Analysis. 2017, 25 (2).
Statistical software, Software vignette

Statistical software

mediascores (R package)
News-sharing Ideology from Social Media Link Data
Software vignette, Academic article

misreport (R package)
Statistical Analysis of Misreporting on Sensitive Survey Questions
Software vignette, Academic article

Vox Pop Labs

I was a partner at, and currently am an advisor for Vox Pop Labs, a political engagement and public opinion research firm that brings social science to the public through civic education applications. Our partners include Vox.com, the Wall Street Journal, Sky News (UK), the Canadian Broadcasting Corporation (CBC), RTL (Germany), France 24, the Australian Broadcasting Corporation (ABC), and TV New Zealand. Vox Pop Labs' most popular application, Vote Compass, has been used by tens of millions of voters, providing them with information about the positions of the political parties on a wide array of issues.

Recent public writing

International terrorism decreases public support for refugee resettlement, but not for long
Journal of Politics Blog. January 22, 2022.
(with Charles Breton)

The Jan. 6 riot at the Capitol hurt the Republican Party, new research finds
Washington Post. July 16, 2021.
(with Frederik Hjorth and Peter Thisted Dinesen)

Trying to understand Jeff Flake? We analyzed his Twitter feed — and were surprised
Washington Post. October 5, 2018.
(with Jan Zilinsky, Jonathan Nagler, and Joshua Tucker)
Methodological supplement

Comparing Trump to the greatest—and the most polarizing—presidents in US history
Brookings. March 20, 2018.
(with Brandon Rottinghaus, and Justin S. Vaughn)