This analysis focuses on whether counties that had previously been “covered” purged voters at a higher rate than noncovered counties after the coverage formula was struck down. It finds increases in purge rate of between 1.5 and 4.5 points in formerly covered jurisdictions post-Shelby, compared with counties that had not been subject to preclearance. Most of the increase came immediately, as the effect in 2014 is substantively and significantly higher than that in 2016.
Resources
Use our resource library to explore the latest research in the field of election science.
This report documents racial disparities in Election Day wait times, finding that voters in minority precincts face systematically longer waits than those in majority-white precincts.
This tool provides eight key questions election officials should consider when designing or reviewing a ballot. These questions focus on layout, instructions, typography, and formatting to help minimize voter errors and undervoting.
This system allows poll workers to hand out tickets to voters waiting in line. Tickets are printed on demand and include a QR code with a date and time for the voter to return, available in English and Spanish. When voters return, the QR code is scanned, and they proceed to vote, reducing physical wait times.
CEIR has surveyed states about voter registration database security every two years since 2018. These surveys have demonstrated widespread best practices in respondent states.
This paper examines factors contributing to wait times during the 2016 presidential election across multiple counties, finding that inadequate resources and staffing are key drivers of long lines.
This tool helps election officials understand how long it will take for lines to dissipate after predictable early-morning or late-day surges of voters at polling places. Calculates projected line lengths and wait times during these surge periods to support staffing and resource planning.
This research finds that when automatic voter registration (AVR) is endorsed by Democratic leaders, Republicans (and independents) expect AVR to reduce the fairness and legitimacy of elections, while Democrats are generally resistant to partisan cues.
This tool helps election officials determine the capacity of a modified polling place system under various social distancing measures and identify where process bottlenecks may have shifted in response to those changes.
This paper proposes a two-part framework for evaluating ballot-marking device verification, finding that while most voters can detect errors when they check their ballot, most do not check their ballot in the first place.
In this article, using data from Orange County, California, the researchers develop two methods for evaluating the quality of voter registration data as it changes over time: (a) generating audit data by repeated record linkage across periodic snapshots of a given database and monitoring it for sudden anomalous changes and (b) identifying duplicates via an efficient, automated duplicate detection, and tracking new duplicates and deduplication efforts over time.
In this paper, Cantoni Indicates that extending the distance to a polling place by a quarter mile decreases voter turnout by one to three percentage points, with a greater impact observed in areas with higher proportions of non-white voters.