Incumbent Jeanne Ives on Tuesday laid claim to the Republican nomination in the race for the 42nd state House district.
With all precincts reporting, unofficial counts show Ives, a freshman representative from Wheaton, with 63 percent of the votes. Challenger Adam Johnson of Warrenville has 37 percent.
Ives said during the campaign that even though none of her bills has become law, she believes she is "extremely influential" in Springfield. She said she hopes to work on tax reform, pension reform and increased transparency.
Ives is a graduate of the United States Military Academy at West Point and a former Wheaton city councilwoman.
Johnson, a Harvard graduate and employee of the DuPage County clerk's office, focused his campaign on what he believes is a lack of visible results from Ives.
No Democrat has filed to run for the seat. The 42nd District includes all or parts of Carol Stream, Lisle, Naperville, Warrenville, West Chicago, Wheaton and Winfield.