Defense attorney Franklyn Gimbel of Milwaukee late last month issued the summons to appear. It calls for the Republican governor to testify at 8:30 a.m. Oct. 16 in Milwaukee County Circuit Court in the trial of Walker's former deputy chief of staff, Kelly Rindfleisch.
Rindfleisch, 43, of Columbus, has been charged with four felony counts of misconduct in public office for alleged illegal campaign work she did in 2010 during Walker's time as Milwaukee County executive.
Walker's office and his campaign declined to answer questions about the governor's upcoming court appearance.
Walker may not be the only high-level state official called to testify. The prosecution has submitted a list of at least 35 potential witnesses, including Walker; former state Rep. Brett Davis, who now runs the state's Medicaid program under Walker; and Department of Administration Secretary Mike Huebsch, a fundraiser for Walker's gubernatorial campaign.
The list of other potential state witnesses includes: