1984Final results
1984 election for Illinois's 9th District
U.S. House · Illinois
Sidney Yates (D) won with 67.5% of the vote, defeating Herbert Sohn (R) by 35.1 points.
Sidney YatesDemocrat · winner
67.5%144,879
Herbert SohnRepublican
32.5%69,613
214,495 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 1984
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.
Sidney YatesHerbert Sohn
$150.3K
Raised by the campaign
$87.4K
$106.2K
Spent by the campaign
$86.9K
$58.3K
Cash on hand
$1.6K
Campaign money: FEC, through Dec 31, 1984.
Source: FEC campaign filingsUpdated Dec 31, 1984