Wisconsin John Doe Probe

Wednesday's decision is a defeat for Gov. Walker and several conservative groups, although a state court ruling still blocks the secret investigation.

Attorneys will argue Tuesday before federal appeals court. It's deciding whether prosecutors should resume or end their probe into Gov. Walker's 2012 recall race.

Most Wisconsin voters have solidified opinions of Gov. Walker, according to Christopher Murray, a political science lecturer in Washington D.C.

The 7th Circuit U.S. Court of Appeals released more documents in the case on Friday, including four that were not supposed to be made public.

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Gov. Walker's campaign has released a flurry of responses and an attack ad, a day after a court released documents from a stalled John Doe probe.

Eric Thayer, Getty Images

A federal court released 266 pages of documents on Thursday, related to a John Doe probe prosecutors launched into Wisconsin's 2012 recall campaigns.

Wisconsin Club For Growth

The suit claims the Government Accountability Board has illegally been helping investigate "virtually every conservative-leaning group in Wisconsin."

The Friends of Scott Walker campaign released a statement Thursday, following news reports that it may be seeking a settlement in a John Doe probe.

According to a Wall Street Journal opinion article, campaign attorney  Steven Biskupic "has been negotiating with Wisconsin special prosecutor Francis Schmitz."

Prosecutors investigating ties between conservative funders and Gov. Walker's 2012 recall campaign have asked federal appeals court to let the probe continue.