“This state is in some ways ground zero for gerrymandering,” Holder told two dozen BLOC canvassers who would knock on doors that afternoon for the progressive judge running in the race. “Last year they called it a blue wave, and yet you didn’t flip one congressional seat here in Wisconsin. That’s not because you didn’t work hard or people didn’t vote. It was because of gerrymandering.” Republicans had so effectively gerrymandered the state that even when Democrats won 53 percent of the statewide vote in 2018, they took only 36 percent of the seats in the state legislature.

For decades, Democrats successfully fought these twin efforts at disenfranchisement in the courts. As Obama’s attorney general, Holder led that charge, filing lawsuits against states like North Carolina and Texas that challenged Republican-­backed laws curbing the right to vote. But this tactic was handed an enormous defeat in 2013, when the Supreme Court gutted the Voting Rights Act of 1965 in Shelby County v. Holder, ruling that states with a long history of discrimination no longer needed federal approval to change voting laws. Last week, the court struck another blow, declaring that federal courts couldn’t block partisan gerrymandering. Voting rights advocates face not only a hostile Trump administration but a growing number of federal benches controlled by conservatives. As the GOP’s war on voting has intensified, the traditional ways of protecting ballot access are no longer reliable.

So Holder is pursuing a new strategy, trying to elect down-ballot candidates who can deliver fairer maps and voting laws. The NDRC invested $350,000 in the Wisconsin Supreme Court race, hoping that a liberal majority on the seven-­member court might strike down any egregious gerrymanders in the next round of redistricting in 2021. “I don’t think that 10 years or so ago, you would have a former attorney general campaigning for a state Supreme Court justice,” Holder told me. “This is a recognition on the part of the Democratic Party, on the part of progressives, that we need to focus on state and local elections to a much greater degree than we have in the past.”...“I understand people are going to be legitimately focused on the presidential race, as we should be,” Holder said. “But it’s going to be my job to make sure we don’t lose sight of those other races that are going to be extremely important.”