Super PAC (Independent Expenditure-Only)
Defending Main Street Superpac Inc.
FEC committee C00540203. Last filed October 19, 2026.
FEC C00540203Last filed 2026-10-19Totals through 2026-10-14
The short version
- Raised $5.9M and spent $5.4M in the 2026 cycle, through October 14, 2026.
- Biggest target: $1.3M opposing Don Leonard.
- $3.0M in general election independent expenditures reported in 24 and 48 hour notices.
- Largest donor on record: Republican Main Street Partnership (Organization), $3.0M.
What it is
Defending Main Street Superpac Inc. is registered with the FEC as a super PAC. In 2026 it has reported $598K in independent expenditures across 3 races, 100% of it helping Republicans.
- Defending Main Street Superpac Inc. ← $3.0M from Republican Main Street Partnership (51% of its reported receipts) No donor disclosure
A super PAC can raise unlimited amounts from individuals, companies, unions and other groups. It cannot give money directly to candidates or coordinate its spending with them. It spends independently, mostly on ads.
Issues it says it stands for
No record found. The FEC does not record issues. The candidates it supports and opposes are listed below.
Registration
| Type | Super PAC (Independent Expenditure-Only) |
|---|---|
| Connected organization | None |
| Treasurer | Chamberlain, Sarah |
| Registered in | DC |
| First filed with the FEC | December 26, 2012 |
Who it supports and opposes
Independent expenditures from its 24 and 48 hour notices, 2026 cycle.
| Position | Candidate | Race | General | Primary or other |
|---|---|---|---|---|
| Oppose | Don Leonard | OH-15 House | $1.3M | $0 |
| Support | Brad Finstad | MN-01 House | $1.2M | $0 |
| Oppose | Jake Johnson D | MN-01 House | $439K | $0 |
| Support | Eric Flores R | TX-34 House | $0 | $135K |
| Support | Zach Nunn R | IA-03 House | $24K | $0 |
Direct contributions to candidates
| Recipient | Given | Checks |
|---|---|---|
| California Republican Party | $1.2M | 2 |
| Gilbert & Wolfand, Pc | $27K | 11 |
| Imperator LLC | $25K | 1 |
| Department of the Treasury | $4K | 1 |
| Dc Treasurer | $3K | 2 |
Largest itemized contributions processed by the FEC, 2026 cycle.
Who funds it
Donor mix
| Source | Amount | Share |
|---|---|---|
| Small donors, $200 or less (not named) | $503 | 0% |
| Individuals giving over $200 (named) | $4.8M | 80% |
| PACs and other political committees | $1.2M | 20% |
| Other receipts (companies, nonprofits, a hybrid PAC's unlimited account) | $3K | 0% |
| Total raised | $5.9M | 100% |
FEC committee totals, 2026 cycle, through October 14, 2026. The 10 largest donors include recent electronic filings, so their share can run ahead of these totals.
100% from 10 donors
Largest named donors
| Donor | Type | Given | Checks |
|---|---|---|---|
| Republican Main Street Partnership | Organization No donor disclosure | $3.0M | 2 |
| Republican Main Street Partnership | Organization No donor disclosure Recent filing | $1.5M | 1 |
| Republican Mainstreet Partnership PAC | Political committee Recent filing | $700K | 1 |
| Elizabeth Forrest Dan Newlin Injury Attorneys | Individual | $250K | 1 |
| Letter Carrier Political Fund FEC | Political committee | $150K | 1 |
| International Association of Fire Fighters (Firepac) | PAC | $100K | 2 |
| Operation Guardian Support PAC FEC | PAC | $80K | 2 |
| Air Line Pilots Assoc. Intl Political Action Committee FEC | PAC | $70K | 1 |
| 31 Days PAC | PAC | $50K | 1 |
| The Bipartisan Network PAC FEC | Political committee | $25K | 1 |
| Capital Bank | Organization No donor disclosure | $3K | 18 |
Built from the 100 largest itemized receipts processed by the FEC through September 30, 2026, plus the largest receipts in reports filed electronically through October 13, 2026 (marked "Recent filing").
Where its individual donors work
| Employer | Given | Donations |
|---|---|---|
| Null | $3.5M | 27 |
| Dan Newlin Injury Attorneys | $250K | 1 |
Employer as reported by each donor, 2026 cycle, FEC processed totals. Retired, self employed and not employed donors are not shown.
Donors marked "No donor disclosure" are companies, LLCs or nonprofits. Unless they are themselves political committees, they do not have to report where their money came from. The disclosed trail ends there.
Primary Sources
- FEC committee page: fec.gov/data/committee/C00540203
- FEC filings: all reports filed by Defending Main Street Superpac Inc.
- Independent expenditures: fec.gov
- Receipts: fec.gov