MADISON, Wisc. – In a serious body blow to a Democrat-driven secret investigation into dozens of Wisconsin conservative organizations, including Gov. Scott Walker’s campaign, a judge has quashed some subpoenas, ruling that they were issued improperly, according to a newly published opinion piece in the Wall Street Journal.

“Now we learn that Judge Gregory A. Peterson ruled on Friday that at least some of those subpoenas were improper,” the Journal’s editorial board broke Friday evening in a piece headlined Wisconsin Political Speech Victory.

According to the ruling, which remains under seal but obtained by the Journal, the subpoenas “do not show probable cause that the moving parties committed any violations of the campaign finance laws,” he wrote.