Mason appeared to outpace Jesiel by a margin of 2.9 percent on Tuesday in the county.
In comparison, the 2014 winner, Republican Sheri Jesiel, won by a margin of 16 percent in that jurisdiction, beating Democrat Loren Karner, who received 12,811 votes to Jesiel's 17,706.
2018 State House race results vs. 2014
Precinct/ County/ Township
GOP 2018
Votes/%
Dem. 2018
Votes/%
GOP 2014
Votes/%
Dem. 2014
Votes/%
Lake County
Sheri Jesiel
18,375/ 48.53%
Joyce Mason
19,491/ 51.47%
Sheri Jesiel
17,706/ 58%
Loren Karner
12,811/ 42%