The Ballot Brief
Dupage County, Illinois

DuPage County Board District 5 (4-Year Term)

IllinoisDupage County › DuPage County Board District 5 (4-Year Term)

2 candidates are tracked for DuPage County Board District 5 (4-Year Term) on the November 3, 2026 ballot: Ian Holzhauer and Chris Jacks. Candidate information follows official Dupage County election filings; verify with the official election office linked below.

Ian Holzhauer won the Democratic nomination with 49.61 percent of the vote, defeating sitting board member Sadia Covert (35.59 percent) and Marylee Leu (14.80 percent); Chris Jacks ran unopposed for the Republican nomination, in the March 17 primary. They meet on the November 3 ballot, per the county's official canvass.

Ian Holzhauer

Democratic

Ian Holzhauer is a 43-year-old attorney from Naperville who has served on the Naperville City Council since 2021 and previously worked as a prosecutor and defense counsel in the Air Force JAG Corps, per Daily Herald. Holzhauer previously served as board chair of the Naperville Area Chamber of Commerce, per Daily Herald.

2026 priorities

Source: candidate campaign site.

Campaign site →

Chris Jacks

Republican

Chris Jacks is a Naperville Park District commissioner who has lived in Naperville since 2008 with his family, whose children attend school in District 203, per campaign site.

2026 priorities

Source: candidate campaign site.

Campaign site →
Verify this race
Candidate roster from official Dupage County Supervisor of Elections filings. Bios and priorities carry their attribution inline.
Cross-check with the official Illinois election office, or see the full Dupage County sample ballot and your exact ballot by address.