Wheaton City Council member Erica Bray-Parker won the 47th House District seat by 18 points on Nov. 3, flipping the west suburban district blue as part of a Democratic wave that reshaped DuPage County government.

Bray-Parker, a retired high school teacher who has served on the Wheaton City Council since 2019, defeated Republican Robert Vrankovich of Carol Stream with 59.1% of the vote, according to unofficial results reported by the Chicago Tribune. Republican Amy Grant had vacated the seat.

The 47th District race was one piece of a countywide rout. Democrats expanded their DuPage County Board majority from 12-6 to 17-1, first reported by Shaw Local. If the results hold, DuPage County Board member Cynthia Cronin Cahill will be the board's only Republican. In 2016, Liz Chaplin was its only Democrat.

Democrats also reelected board Chairwoman Deb Conroy, flipped the treasurer's office, held the clerk's office and elected a sheriff. The Democratic Party of DuPage called the county's first Democratic sheriff in living memory, "possibly dating back to 1890," according to Shaw Local.

Beyond the board, Democrats flipped state House Districts 47 and 48 and Senate District 24. In the 48th District, Democrat Amanda Zahorak ousted incumbent Jennifer Sanalitro, who had won by nearly 16 points two years earlier, according to Capitol News Illinois.

Three longtime Republican board members lost their seats. Jim Zay, the board's longest-serving member, fell to newcomer Jesse Gutierrez, a West Chicago Democrat, by a margin of roughly 29,500 to 21,400 in unofficial totals reported by the Chicago Tribune. Brian Krajewski, a board member since 2010, lost to Ericka Polanco-Webb. Paula McGowen defeated incumbent Grant Eckhoff in District 4.

Krajewski said the outcome did not surprise him. "I saw what was coming," he told Shaw Local. "People were voting and sending a message to Washington, and the Republicans locally got tied up with that."

Affordable housing, mental health and public transit were among the top priorities DuPage County Board candidates cited during the campaign, according to the Tribune.

Melissa Mouritsen, a political science professor at College of DuPage, told Shaw Local the national mood was only part of the story. She said the result combined 15 to 20 years of organizing work with a long-term demographic shift and the national effect.

The results played out against a national Democratic surge. Democrats won control of Congress, flipping at least seven Senate seats and more than two dozen House districts, according to The Associated Press. Scot Schraufnagel, a Northern Illinois University political science professor, said in a statement that "the size of the loss in 2026 is significant, on par with the elections of 1994 and 2010, which were both Republican Party waves."

All results remain unofficial until the canvass.