Morrison appeared to outpace Trevor by a margin of 1.1 percent on Tuesday in the county.
In comparison, the 2014 winner, Republican Tom Morrison, won by a margin of 31.8 percent in that jurisdiction, beating Democrat Laddi K. Singh, who received 11,360 votes to Morrison's 21,973.
2018 State House race results vs. 2014
Precinct/ County/ Township
GOP 2018
Votes/%
Dem. 2018
Votes/%
GOP 2014
Votes/%
Dem. 2014
Votes/%
Cook County
Tom Morrison
21,613/ 50.56%
Maggie Trevor
21,131/ 49.44%
Tom Morrison
21,973/ 65.9%
Laddi K. Singh
11,360/ 34.1%