A spokeswoman for Gov. Scott Walker said the “issue is not on our agenda.”

Joe Zepecki, a spokesman for Walker’s likely Democratic challenger Mary Burke, could not be reached for comment.

The ruling, written by Judge Diane Sykes — a former member of the Wisconsin Supreme Court who was appointed to the federal court by President George W. Bush — is just the latest to loosen restrictions on campaign spending. It found Wisconsin elections officials overstepped their bounds in governing so-called issue advocacy and how outside groups spend during elections.

For example, it said Wisconsin’s ban on corporate political spending is unconstitutional under the U.S. Supreme Court’s 2010 Citizens United decision. It also lifted time restraints on some issue ad spending, and found some registration and reporting requirements for organizations that sponsor independent expenditures to be unconstitutional.

The ruling will likely have little effect on the 2014 elections, as state elections officials had already agreed to stop enforcing laws related to these issues, said Milwaukee-based attorney Mike Maistelman.

But Maistelman called it a “victory for John Doe defendants,” referring to issue advocacy groups under investigation for allegedly coordinating with campaigns.