Didech appeared to outpace Feldman by a margin of 28.2 percent on Tuesday in the county.
In comparison, the 2014 winner, Democrat Carol Sente, won by a margin of 20 percent in that jurisdiction, beating Republican Leslie Munger, who received 1,064 votes to Sente's 1,596.
2018 State House race results vs. 2014
Precinct/ County/ Township
GOP 2018
Votes/%
Dem. 2018
Votes/%
GOP 2014
Votes/%
Dem. 2014
Votes/%
Cook County
Karen Feldman
1,311/ 35.89%
Daniel Didech
2,342/ 64.11%
Leslie Munger
1,064/ 40%
Carol Sente
1,596/ 60%