D'Amico appeared to outpace Biela by a margin of 14.8 percent on Tuesday in the county.
In comparison, the 2014 winner, Democrat John C. D'amico, won by a margin of 24.5 percent in that jurisdiction, beating Republican Gregory A. Bedell, who received 9,967 votes to D'amico's 16,433.
2018 State House race results vs. 2014
Precinct/ County/ Township
GOP 2018
Votes/%
Dem. 2018
Votes/%
GOP 2014
Votes/%
Dem. 2014
Votes/%
Cook County
Amanda Biela
6,962/ 42.62%
John C. D'Amico
9,374/ 57.38%
Gregory A. Bedell
9,967/ 37.8%
John C. D'amico
16,433/ 62.2%