Republican Deanne Mazzochi of Elmhurst won Illinois' 47th House District seat against Democrat Jim Caffrey by just more than 4 percentage points Nov. 6 in DuPage County.
Mazzochi received about 52.2 percent of the vote, or 23,944 votes, compared to Caffrey's about 47.8 percent, or 21,913 votes, preliminary numbers show, with all DuPage precincts reporting.
In Cook County, Mazzochi beat Caffrey by about 170 votes, according to unofficial results reported by the Cook County Clerk's Office from all six precincts included in the district.
"I've very humbled and grateful," Mazzochi said of the support she received from voters of the 47th District. "They deserve the reform agenda that I campaigned on, and I will do my best to deliver them that and to look out for their best interests and not those of a political machine down in Springfield."
Mazzochi has served as chairwoman of the College of DuPage Board of Trustees, and she was appointed to fill the 47th District seat following the appointment of former state Rep. Patti Bellock, R-Hinsdale, to director of the Illinois Department of Healthcare and Family Services.
Caffrey said he ran a grassroots campaign of which he and his team are proud.
"We did well. We just came up a little short," Caffrey said.
Caffrey, an Elmhurst resident who formerly served as a customer team manager at Clorox, said he plans to stay involved in the Democratic Party, help other Democratic candidates and remain a Democratic precinct committeeman.
The district includes Elmhurst, Oak Brook, Hinsdale, Clarendon Hills and Westmont in DuPage County, as well as a portion of Western Springs in Cook County.