Voter ID advocates and opponents alike will be watching Wisconsin on Monday as a new federal trial on the state’s photo ID law begins. The case is the first federal trial under the Voting Rights Act since the Supreme Court struck down part of the law in June, and it’s one of the first cases to challenge voter ID under what’s known as Section 2 of the VRA. Section 2, which was unaffected by the Supreme Court’s decision, prohibits procedures that discriminate based on race and other protected groups. “I think that everyone’s going to be looking at what happens in Wisconsin,” said Rick Hasen, a University of California, Irvine, law and political science professor and author of Election Law Blog. “Whoever’s on the successful side will say, ‘See, we told you,’ and whoever’s on the losing side will either say the court got it wrong or point to factual differences [in their state], but it will be important because it’s one of the first Section 2 challenges to the voting ID law.” The trial covers two challenges to the law, one brought by the group Advancement Project, which argues that the Wisconsin law is particularly burdensome on voters of color, and another brought by the American Civil Liberties Union, which focuses on minorities as well as elderly, student, low-income, disabled and homeless voters.