Brennan Center Tracks Rise of Private Voter Challenges in Kansas City

The Brennan Center’s July 2026 report identifies mass voter challenges as a recurring element in the election-denial playbook that is expected to stay prominent during the 2026 midterms. The center traces the tactic’s development through recent cycles and notes that private citizens filed at least 185,232 challenges in 2024, a figure that is probably higher because some state records were incomplete or unavailable.

How the tactic developed

According to the report, these challenges rarely succeed in removing large numbers of voters from the rolls. Instead they place heavy administrative loads on election offices and force eligible voters to spend time verifying their status. The center describes the approach as one that gained visibility after 2020 and continued into the 2024 cycle, with private individuals rather than officials driving most of the activity.

Why the volume matters now

The same report warns that future rounds of challenges could benefit from a more supportive federal environment. It states that the combination of sustained volume and changing federal conditions could be used to undermine the democratic process itself. A Maryland Matters archive summary of the Brennan Center findings repeats the assessment that mass challenges are likely to recur in the 2026 midterm elections.

Implications for election offices

Election officials in jurisdictions across the country, including those serving Kansas City voters, have already managed the paperwork and verification demands created by earlier waves of challenges. The Brennan Center notes that the work required to respond to each filing diverts staff time from routine preparation and can create backlogs even when few names are ultimately removed. The center’s analysis does not project exact numbers for 2026 but treats the 2024 experience as evidence that the tactic can be scaled quickly when political conditions favor it.

Because the report draws on records from multiple states and finds consistent patterns, it treats the 185,232 figure as a minimum rather than an estimate of total activity. Officials and advocacy groups monitoring the midterms are therefore preparing for similar or larger volumes without assuming that most challenges will result in removals.