1990Flipped from RepublicanFinal results
1990 election for Illinois's 16th District
U.S. House · Illinois
John Cox (D) won with 54.6% of the vote, defeating John W. Hallock Jr. (R) by 9.2 points, a seat Republicans won last time.
John CoxDemocrat · winner
54.6%83,061
John W. Hallock Jr.Republican
45.4%69,105
152,166 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1990
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
John CoxJohn W. Hallock Jr.
$377.4K
Raised by the campaign
$552.1K
$371.1K
Spent by the campaign
$548.3K
$6.3K
Cash on hand
$3.8K
Campaign money: FEC, through Dec 31, 1990.
Source: FEC campaign filingsUpdated Dec 31, 1990