Biggest governor landslides in Illinois

The most lopsided races for governor of Illinois, ranked by the winner’s margin over the runner-up.

The biggest landslide in a Illinois governor’s race was in 1848, a margin of 79.5 points. Augustus C. French beat W. L. D. Morrison, 67,828 to 5,659. Next widest are 1976 (30.0 points) and 1994 (29.4 points).

Every state is ranked together on Biggest governor landslides. For every gubernatorial race Illinois has held, special elections included, see the Illinois governor hub.

What is the biggest landslide in a Illinois governor’s race?

The widest margin in a Illinois gubernatorial general election came in 1848, 79.5 points. Augustus C. French beat W. L. D. Morrison, 67,828 to 5,659. Next are 1976 (30.0 points) and 1994 (29.4 points).

Why do some huge wins not appear?

A blowout only counts here when somebody real finished second, which means at least 5% of the vote. Without that rule the list fills with uncontested races and with contests where the record is simply missing the major opponent, both of which show the winner near 100%.

Does this include recalls and special elections?

No, only regular general elections for governor. The Illinois governor hub lists every race including specials and recalls.

Biggest governor landslides in Illinois
#ElectionResultVotesMargin
11848Augustus C. French D def. W. L. D. Morrison W67,828 – 5,659+79.5 points
21976Jim Thompson R def. Michael Howlett D3,000,395 – 1,610,258+30.0 points
31994Jim Edgar R def. Dawn Clark Netsch D1,984,318 – 1,069,850+29.4 points
41904Charles S. Deneen R def. Lawrence B. Stringer D634,029 – 334,880+27.9 points
51920Len Small R def. J. Hamilton Lewis D1,243,148 – 731,541+24.2 points
61834Joseph Duncan D def. William Kinney D17,349 – 10,229+21.7 points
71846Augustus C. French D def. Thomas M. Kilpatrick W58,657 – 37,033+21.5 points
81978Jim Thompson R def. Michael Bakalis D1,859,684 – 1,263,134+18.9 points
91830John Reynolds D def. William Kinney D12,837 – 8,938+17.9 points
101932Henry Horner D def. Len Small R1,930,330 – 1,364,043+16.9 points
112018JB Pritzker D def. Bruce Rauner R2,479,746 – 1,765,751+15.7 points
121948Adlai Stevenson D def. Dwight H. Green R2,250,074 – 1,678,007+14.5 points
131924Len Small R def. Norman L. Jones D1,366,446 – 1,021,408+14.3 points
141928Louis Lincoln Emmerson R def. Floyd E. Thompson D1,709,818 – 1,284,897+14.1 points
151986Jim Thompson R def. Adlai Stevenson III S1,655,849 – 1,256,626+12.7 points
162022JB Pritzker D def. Darren Bailey R2,253,748 – 1,739,095+12.5 points
171960Otto Kerner Jr. D def. William Stratton R2,594,731 – 2,070,479+11.2 points
181868John M Palmer R def. John R. Eden D249,912 – 199,813+11.2 points
191912Edward Fitzsimmons Dunne D def. Charles S. Deneen R443,120 – 318,469+10.7 points
201852Joel Aldrich Matteson D def. Edwin B. Webb W80,789 – 64,408+10.6 points
211916Frank Orren Lowden R def. Edward Fitzsimmons Dunne D696,535 – 556,654+10.6 points
222006Rod Blagojevich D def. Judy Baar Topinka R1,736,731 – 1,369,315+10.5 points
231896John Riley Tanner R def. John Peter Altgeld D587,637 – 474,256+10.4 points
241936Henry Horner D def. C. Wayland Brooks R2,067,861 – 1,682,685+9.9 points
251872Richard J Oglesby R def. Gustavus Koerner R237,774 – 197,084+9.3 points

How this ranking is measured

Gubernatorial general elections in Illinois, ranked by the largest gap in vote share between the top two finishers, widest 25 shown. Served from the governor_race_margin materialized view. A qualifying race needs a genuine second-place finisher with at least 5% of the vote, and at least 1,000 votes between the top two. Recalls and special elections are excluded; the state hub lists those. The national list applies a 50,000-vote floor, so an early race can appear here and not there.

Compiled by PolitiFinder · published June 14, 2026 · sources: Data & sources · data last verified September 30, 2026.