“We will decide the next course of action after (the Department of Justice) attorneys have had time to fully review and analyze the court’s decision,” Schimel said in a statement.

Sean Young, an attorney with the ACLU’s Voting Rights Project, said the ruling was a “strong rebuke of the state’s efforts to limit access to the ballot box.”

“Wisconsin’s voter ID law has been a mistake from day one,” Young said in a statement. “It means that a fail safe will be in place in November for voters who have had difficulty obtaining ID.”

Voters must show a Wisconsin driver’s license or state ID card, a U.S. passport, military ID card, a college ID meeting certain requirements, a naturalization certificate or ID issued by a state-based American Indian tribe in order to vote.

Reid Magney, spokesman for the state Elections Commission, said the board will talk to DOJ attorneys about the decision to prepare for the November election.

“It is too early to discuss the details of how the affidavit procedure will be implemented, however, it will affect a relatively small number of voters,” he said.