Candidate · 2026 midterms
Sean Casten
Illinois's primary was on March 17, 2026. We have not loaded the result yet. Sean Casten has raised $2.1M.
DEMUS House, Illinois 06Challenger
What is in this fileChecked 2026-07-30
Money
Complete
FEC filings for the 2026 cycle
Background and ties
Complete
Sourced public records
Photo
Complete
Licensed image on file
Voting record
Not applicable
Has never held this seat
Primary result
Missing
Primary passed; result not loaded
File — The race
US House, Illinois 06
Both sides of the seat, and what each has raised so far this cycle.
Primary · March 17, 2026$2.4M raised by the top two
File — Quick answers
What people ask about Sean Casten
Held office before?
Yes. Sourced background is loaded below.
Raised so far
$2.1M, from FEC filings.
Running against
Niki Conforti, with $313K raised.
Currently in office?
No. This page is for a candidate who holds no office.
When people vote
Primary March 17, 2026. General November 3, 2026.
File — Ties
Family, money and earlier runs
Each line states the sourced relationship and stops there.
Family
father of Tom Casten [source]
File — Where the money came from
$2.1M raised
The FEC reports a candidate's totals by source. Donor names are not loaded for this page.
Individuals $1.3MPACs $724KParty $33
Named donors are not available for this candidate. Itemized donor names are matched to people who hold or have held office.
File — Background
house_candidate Sean Casten, IL
Born November 23, 1971.
Studied at
Middlebury College · Dartmouth College [wikidata]
Family money
father · sourced role
Tom Casten [source]
Thomas R. Casten is an American businessman, author, and activist known for his work on industrial energy recycling. Since 1977, Casten has founded and managed numerous companies and organizations associated with combined heat and power, decentralized energy, and waste energy recovery.