Deanne Marie Mazzochi is a politician who served as a Republican member of the Illinois House of Representatives from the 47th district from 2018 to 2023.

The 47th district included all or parts of Elmhurst, Oak Brook, Oakbrook Terrace, Western Springs, Clarendon Hills, Hinsdale, Westmont, and Downers Grove.

[1] She was the Chair of the College of DuPage Board of Trustees prior to her appointment to the Illinois House of Representatives.

[4] She lost re-election in 2022 to Democrat Jenn Ladisch Douglass and has not publicly acknowledged or conceded her loss since then.

In the suit, Mazzochi accused the DuPage County Clerk of improperly verifying mail-in ballot signatures.