Programming Error in Westchester Ballots Disrupts NY-17 Vote, Delaying Results in Tight House Race

On Election Day 2026, a county-wide technical failure in Westchester County, New York, prevented ballot scanners from accepting paper ballots at hundreds of polling sites, affecting an estimated 250,000 voters in one of the nation's most competitive congressional districts. The issue stemmed from a late programming update tied to a mayoral contest in the village of Ardsley: after the change, Election Day ballots printed for the rest of the county carried mismatched barcodes and programming that scanners—still running the original configuration—could not recognize. Scanners rejected the ballots rather than misrecording votes. Voters deposited marked ballots into sealed emergency bags for secure transport and centralized scanning after polls closed at 9 p.m., with officials projecting results delayed into early Wednesday morning. The New York State Board of Elections confirmed the root cause as a failure to propagate the programming update county-wide after initial testing and early-voting deployment. Westchester County Executive Ken Jenkins described the episode as a “debacle” and announced a bipartisan post-election review. Bipartisan candidates Rep. Mike Lawler (R) and Cait Conley (D) both urged voters to remain in line, emphasizing that every ballot would be counted. New York Attorney General Letitia James’s office monitored the situation in real time. No evidence of hacking, intentional interference, or paper defects emerged; earlier speculation about ballot thickness was withdrawn. The episode highlights systemic vulnerabilities in last-minute ballot changes and pre-election testing protocols for jurisdictions using optical-scan systems, particularly in high-stakes races where even temporary disruptions can fuel partisan narratives about election integrity.