A federal lawsuit filed Monday in Columbus, Ohio, charges the secretary of state’s office with illegally installing untested software on voting systems in dozens of counties – a step that creates a digital “back door,” which someone wishing to alter vote totals might be able to exploit.

With Ohio seen as perhaps the most pivotal state in the presidential election, it is being closely watched for the slightest sign of irregularities. The suit seeks a temporary injunction to prevent the state from using the software in Tuesday’s election. A hearing is scheduled for 10 a.m. in the US District Court for the southern district of Ohio, eastern division. If granted, an injunction could prevent Ohio votes from being formatted by the new software and sent to the office of Secretary of State Jon Husted (R) after polls close. [Link]