Laws left untouched by Peterson's ruling include provisions eliminating straight-ticket voting, statewide special registration deputies and the use of corroboration for registration.

"We argued Gov. Walker made it harder for Democrats to vote and easier for Republicans to cheat, and the judge agreed," said One Wisconsin Institute executive director Scot Ross.

Department of Justice spokesman Johnny Koremenos said the agency is reviewing and analyzing the court's "lengthy order," but based on an initial reading, plans to appeal it to the U.S. 7th Circuit Court of Appeals.

A spokesman for the governor's office said they are still reviewing the order.

"This is a liberal judge’s attempt to undermine our elections less than four months out," said Assembly Speaker Robin Vos, R-Rochester. "It’s also an obvious attempt to usurp the power of the legislature. I’m confident that the laws will be reinstated upon appeal. The measures did not disenfranchise voters; they protected the integrity of our elections and people’s right to vote."

Michael Haas, interim administrator of the Wisconsin Elections Commission, said the decision is being reviewed in consultation with DOJ attorneys.