A conservative group did not violate the Voting Rights Act when it announced it was challenging the eligibility of more than 360,000 Georgia voters just before a 2021 runoff election for two pivotal U.S. Senate seats, a judge ruled Tuesday. But he expressed concerns about the group’s methods.

U.S. District Judge Steve Jones of the U.S. District Court for the Northern District of Georgia issued a 145-page decision in favor of Texas-based nonprofit True the Vote. Fair Fight, a group founded by former Democratic Georgia gubernatorial candidate Stacey Abrams, had sued True the Vote and several individuals, alleging that their actions violated a section of the 1965 Voting Rights Act that prohibits voter intimidation.