Flipped from RepublicanCalledUnofficial resultsIncumbent defeated
Illinois Legislative District 24
Illinois State Senate · Illinois
Benjamin "Ben" McAdams flipped the seat for Democrats, winning by 9.6 points over Seth Lewis.
Staggered Senate
Benjamin "Ben" McAdamsDemocrat · winner
54.8%45,251
Seth LewisRepublican · incumbent
45.2%37,288
100% of the expected vote counted · 82,539 votes
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 7:01 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Benjamin "Ben" McAdamsSeth Lewis
$154.4K
Raised by the campaign
$643.7K
$105.4K
Spent by the campaign
$537.1K
$49K
Cash on hand
$210.6K
Campaign money: Illinois State Board of Elections, through Sep 30, 2026.
Source: Illinois State Board of Elections campaign filingsUpdated Sep 30, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Benjamin "Ben" McAdams
- 85%
- Seth Lewis
- 15%
- Projected margin
- D+7.9