# Senate Leadership Fund The **Senate Leadership Fund (SLF)** is the **principal Republican super PAC for U.S. Senate races**, founded in 2015 as the successor operation to American Crossroads' Senate-focused giving. SLF is operationally aligned with Senate Republican leadership (Mitch McConnell's leadership 2015-2024; [[John Thune]]'s leadership 2025 onward) and has functioned since its founding as the **single largest Republican-side spending vehicle on Senate races**. Its president since founding is **Steven Law**, a longtime McConnell political operative and former Chief of Staff to McConnell, previously Labor Solicitor under [[George W. Bush]]. SLF operates in partnership with **One Nation**, a 501(c)(4) "dark money" non-profit that functions as SLF's donor-disclosure-exempt companion organization — allowing donors who prefer not to have their contributions publicly reported to contribute through One Nation while SLF handles the disclosed-donor spending. Total SLF spending across elections has exceeded **$400 million** by end of the 2024 cycle, with its largest individual donors including [[Ken Griffin]], Paul Singer, Steven Schwarzman, and a range of other large Republican-side donors. SLF matters for the KB for three reasons. First, it is the **principal institutional destination of the largest Republican Senate-level donors** — the vehicle through which hundreds of millions of dollars of hedge-fund, private-equity, and finance-sector giving has been directed into Senate Republican campaigns. The donor roster is documentary of the Republican-finance-sector alliance at the Senate leadership level. Second, it is the **McConnell-era institutional infrastructure** through which Senate Republican leadership has operated political spending — SLF's campaign strategy, ad buying, and opposition-research operations are substantially coordinated with McConnell's and then Thune's leadership teams, making it the super-PAC expression of the Senate Republican leadership's campaign priorities. Third, the **SLF-One Nation dual structure** is one of the clearest case studies in the KB of the post-*[[Citizens United v. FEC]]* super-PAC / 501(c)(4) architecture — the structural mechanism by which large donors can split contributions between disclosed (super-PAC) and undisclosed ("dark money" 501(c)(4)) vehicles according to their preferences, and the institutional model the [[Leonard Leo]] dark-money network and other Republican political operations have adapted for their own purposes. ## Founding (2015) SLF was founded in late 2015 by Steven Law and the Republican Senate leadership political team, replacing American Crossroads' Senate-focused giving. The founding context: - **American Crossroads**: The [[Karl Rove]]-founded super PAC had been the principal Republican vehicle for both Senate and presidential races in the 2010 and 2012 cycles. Post-2012 performance reviews led to a restructuring in which Senate and presidential operations were separated - **SLF founding**: Steven Law, who had been American Crossroads' CEO, moved to lead the new Senate-dedicated operation - **McConnell backing**: McConnell personally and his political operation publicly endorsed SLF as the Senate super PAC of the Senate Republican leadership The founding architecture — super PAC + 501(c)(4) partner — was adapted from earlier political operations (Americans for Prosperity / [[Americans for Prosperity Foundation]], etc.) but distinguished SLF as the dominant Republican Senate-race vehicle. ## Financial Scale SLF's spending scale has grown across cycles: - **2016 cycle**: ~$65 million in independent expenditures - **2018 cycle**: ~$85 million in independent expenditures - **2020 cycle**: ~$290 million in independent expenditures, including significant spending on the Georgia runoffs that determined Senate control - **2022 cycle**: ~$240 million in independent expenditures - **2024 cycle**: **$296.6 million** in total disbursements, of which **$211.1 million** was reported as independent expenditures (FEC committee totals, checked 2026-10-04; an earlier version of this page said "~$300+ million in independent expenditures," which conflated the two) - **Cumulative through 2024**: Exceeds $1 billion including coordinated spending with One Nation The scale makes SLF by a substantial margin the largest Senate-focused Republican political spending operation in post-Citizens United electoral history. ## Major Donors SLF's publicly disclosed donor roster is documentary of the Republican donor class at the Senate-leadership level. Largest individual cumulative donors include: - **[[Ken Griffin]]**: Citadel founder; one of SLF's largest individual donors across cycles, with combined Griffin / Citadel giving exceeding $50 million - **Paul Singer**: Elliott Management founder; long-time Republican megadonor with substantial SLF contributions - **Steven Schwarzman**: Blackstone CEO; substantial cumulative giving - **[[Miriam Adelson]]**: Sheldon Adelson's widow (Adelson himself was a major SLF donor before his 2021 death) - **[[Timothy Mellon]]**: Heir to the Mellon banking fortune - **[[Dick Uihlein]]** (Richard Uihlein): Uline Corporation co-founder; Illinois-based donor aligned with the party's right wing - **[[Jeff Yass]]**: Susquehanna International Group co-founder; 2020s-era major donor - **[[Elon Musk]]**: **$10,000,000** on Oct. 1, 2024, then **$10,000,000** more in the 2026 cycle, as $5M on June 27, 2025 (three weeks after his public break with Trump) and $5M on Dec. 15, 2025. FEC Schedule A; the FEC now lists the committee as "SLF PAC" under the same ID, C00571703. See [[Elon Musk Political Donations]] - **Then $158,000,000 in the third quarter of 2026**, reported October 12, 2026 — the single largest destination of Musk's $276 million third-quarter spending spree and, by itself, more than SLF's entire 2016-cycle independent-expenditure total. It makes one donor the dominant funder of the Senate majority-protection vehicle in the closing weeks of the midterms. See [[Elon Musk News Log]] entry 2026-10-12 and [[Project Meridian]] for the contracting exposure running the other way. > [!warning] Sourcing — press reporting of Q3 filings, FEC not yet checked directly > The $158M figure is two-sourced to outlets reading the campaign-finance records (Investing.com and The Source, both 2026-10-12/13, tracing to the *New York Times*), and an America PAC spokesman confirmed the donation totals. It has **not** been confirmed against FEC Schedule A in this pass, which is the standard the rest of this bullet meets. Verify against C00571703 before citing it as a filing. Flagged 2026-10-13. Corporate and trade-association giving includes contributions from a range of healthcare, finance, and energy sector entities. ## The SLF-One Nation Structure The **SLF-One Nation dual structure** is the institutional innovation: - **SLF** (super PAC, 501(c)(4)-style spending disclosed): Takes contributions with donor names publicly reported to the FEC; spends on independent expenditures supporting Senate Republican candidates - **One Nation** (501(c)(4) "social welfare" non-profit): Takes contributions without donor-name disclosure requirements; spends on "issue advocacy" that is substantively similar to campaign spending but is nominally about policy issues rather than candidates Large donors route contributions between the two according to their preferences — donors willing to be publicly identified can give to SLF, donors preferring anonymity can give to One Nation, and individual donors frequently split their giving between both. The structure is **legally permissible** under post-*Citizens United* election finance law but is a recurring target of campaign-finance reform advocacy. Critics argue that the structure functionally converts "dark money" giving into campaign spending while preserving the nominal separation between issue advocacy and electoral spending that 501(c)(4) status requires. The Republican counter-argument is that the legal framework is clear, that other political operations (including left-leaning 501(c)(4)s and their super PAC partners) use structurally identical architectures, and that donor privacy is a legitimate interest. ## Connection to the Broader Dark Money Network SLF is a node in a larger Republican-side dark-money architecture that includes: - **[[DonorsTrust]]**: The donor-advised-fund vehicle through which some SLF/One Nation contributions are routed - **Leonard Leo dark-money network**: SLF and the Leo judicial-confirmation network operate in parallel but coordinate on shared priorities (particularly Senate confirmation votes on judicial nominees) - **[[Koch Network]]**: Historically more distance between SLF and the Koch operation than within the Republican megadonor class generally, but significant overlap in donor rosters and priority-setting - **State-level spending**: One Nation and SLF have increasingly invested in state-level spending (state Supreme Court races, state legislature races) through partnered vehicles ## McConnell-to-Thune Transition The January 2025 transition from McConnell's Senate leadership to Thune's has produced some organizational questions for SLF: - **Steven Law continuity**: Law has remained SLF president across the leadership transition, providing institutional continuity - **Thune priorities**: Early indications suggest the Thune-era SLF operations will continue the McConnell-era strategic framework with minor adjustments - **Post-McConnell donor relationships**: Some large McConnell-era donors (notably Ken Griffin) have maintained their giving under the Thune leadership; whether the long-term donor base remains stable is a live question ## The 2026 Cycle SLF's 2026 operation is organized around an **April 6, 2026 announcement of $342 million across eight Senate races** — Ohio, North Carolina, Michigan, Georgia, Maine, Iowa, Alaska and New Hampshire, five defensive holds and three attempted flips. It is the largest single-cycle SLF commitment on record. See [[SLF 342M Senate IE Reservation Program]]. ### Texas, and the Texas PAC vehicle **Texas was not one of the eight.** Senate Republicans backed [[John Cornyn]] against [[Ken Paxton]] through the 2026 primary and the May 26 runoff, arguing that Paxton's legal and ethical record would both endanger a safe seat and make defending it expensive; SLF then sat out the Texas general through the entire summer. [[One Nation]], its donor-anonymous partner, had spent millions in the summer of 2025 on positive advertising for Cornyn. That position reversed in September 2026. Rather than extend an existing program, SLF stood up a **separate committee — [[Texas PAC]], FEC C00960211, registered August 28, 2026** — which booked roughly $51.3M of broadcast time on September 11 and had disclosed **$63,809,077.89** of independent expenditures by September 19, including the **two largest single independent expenditures of the 2026 cycle** ($26,982,612.80 and $26,879,614.88, both filed September 14). See [[Texas PAC 53.9M Texas Senate IE]] and [[TX-Sen-2026]]. Three things about this are structurally notable: - **The Texas money is additive to the $342M**, not drawn from it — a roughly fifteen percent expansion of the program into a state that was never on the board. - **A new committee, not the existing one.** Texas PAC is a **quarterly** filer, which means its receipts are not public until **October 15, 2026**, nineteen days before the election. Whether SLF transfers, [[One Nation]] money, or named donors funded it is unknown and should not be assumed. - **The vehicle is administratively separate from the Trump operation's.** Texas PAC files through Right Side Compliance in Austin under treasurer Cabell Hobbs; [[MAGA Inc]] and No Going Back PAC file through Bulldog Compliance in Beverly, Massachusetts under Charles Gantt. Two very large pro-Paxton efforts, separately administered, because the non-coordination rule is what makes the separation worth paying for. ⏰ **Open:** the October 15 quarterly report is the first document that identifies Texas PAC's funders and therefore the first test of whether SLF's Texas spending is SLF money at all. ## Filed 2026 independent expenditures — the Deals ledger | Filing / program | Date | Amount | Deal page | |---|---|---|---| | April 2026 reservation, eight races | 2026-04 | **$342,000,000** | [[SLF 342M Senate IE Reservation Program]] | | Form 24, file 2015242 — eight Senate races, 99.9% negative | exp. 2026-09-23 | **$23,586,505.68** | [[SLF 23.6M Senate IE September 2026]] | | Form 24, file 2016104 — seven Senate races | exp. 2026-09-29/30 | $9,216,404.25 | roll-up only, below the §7 single-buy floor | | Through [[Texas PAC]], file 2011867 | exp. 2026-09-11 | **$53,862,227.68** | [[Texas PAC 53.9M Texas Senate IE]] | | Through [[Texas PAC]], file 2015764 | exp. 2026-09-30 | **$61,413,929.82** | [[Texas PAC 61.4M Texas Senate IE]] | | Form 24, file 2016506 — six Senate races, **100% negative** | exp. 2026-09-30 | **$22,530,483.71** | [[SLF 22.5M Senate IE October 2026]] | | Through [[Texas PAC]], file 2016439 | exp. 2026-09-30 | $35,000.00 | roll-up only, below the §7 single-buy floor | | Form 24, file 2018550 — six Senate races, **7.71% positive** | exp. 2026-10-06 | $6,005,300.69 | roll-up only, below the §7 single-buy floor | | Form 24, file 2019082 — **eight** Senate races, **100% negative** | exp. 2026-10-07 | **$26,029,336.17** | [[SLF 26M Senate IE October 2026]] | > [!warning] 🔴 SLF PAC is no longer a 100%-negative committee > Filings reviewed through 2026-10-07 showed this committee as **entirely negative**. > **That changed on receipt date 2026-10-08.** On file **2018550** > (`F24N`, received 19:00:00, expenditure date 2026-10-06) the committee filed **$463,195.00 of support** > against **$5,542,105.69 of opposition** across nine lines in six states: > > | Direction | Candidate | Race | Amount | Payee | > |---|---|---|---|---| > | **support** | [[Jon Husted]] | [[OH-Sen-2026-Special]] | **$338,497.00** | Cavalry LLC | > | **support** | [[Susan Collins]] | [[ME-Sen-2026]] | **$114,698.00** | Cavalry LLC | > | **support** | [[Jon Husted]] | [[OH-Sen-2026-Special]] | $5,000.00 | SLMG LLC | > | **support** | [[Susan Collins]] | [[ME-Sen-2026]] | $5,000.00 | SLMG LLC | > | oppose | [[Abdul El-Sayed]] | [[MI-Sen-2026]] | $3,252,626.64 | [[MHB Media Inc]] | > | oppose | [[Jon Ossoff]] | [[GA-Sen-2026]] | $1,956,806.72 | MHB Media, Inc | > | oppose | [[Troy Jackson]] | [[ME-Sen-2026]] | $159,204.47 | Creative Direct | > | oppose | [[Chris Pappas]] | [[NH-Sen-2026]] | $90,074.68 | Majority Strategies LLC | > | oppose | [[Mary Peltola]] | [[AK-Sen-2026]] | $83,393.18 | Rival Strategy Group LLC | > > **Derived total $6,005,300.69**, arithmetic checked. Two new vendors appear with the positive money — > **Cavalry LLC** and **SLMG LLC** — and they are used for *nothing else* on the notice, which means the > shift is a separate purchase decision rather than a reallocation inside an existing buy. Statements > elsewhere in this vault that the committee "remains 100.00% negative" describe their own dates and are > **superseded from 2026-10-06**. Source: `docquery.fec.gov/dcdev/posted/2018550.fec` > [!warning] 🔴 The positive turn did not continue — checked 2026-10-10 > The trigger set on 2026-10-09 was *the committee's next Form 24, and whether the support share rises > above 7.71%.* **That notice is file 2019082, received 2026-10-09, and the support share is 0.00%.** > SLF PAC spent **$26,029,336.17** across 28 lines in eight Senate races the day after the positive buy and > **not one dollar of it supports anybody**. Neither **Cavalry LLC** nor **SLMG LLC** — the two vendors that > carried the entire $463,195.00 of positive advertising on file 2018550 — appears on this notice at all. > > The honest reading: the October 6 purchase was a **discrete decision in two specific seats**, not a change > in the committee's posture. The correction above stands — SLF PAC is no longer a committee with a > *100%-negative record* — but it is still a committee whose **method** is to buy against the Democrat. > Both facts go on the page. See [[SLF 26M Senate IE October 2026]]. > > **South Carolina is new on that notice.** $1,550,005.20 opposing [[Annie Andrews]] is SLF PAC's **first > independent expenditure in [[SC-Sen-2026]]**, a Likely R open seat since [[Lindsey Graham]] died in office > on 2026-07-11. Kansas, entered unannounced on 2026-10-02, now carries $1,886,538.88 on a single notice > against $545,775.68 on its first appearance. > > 🔴 **A treasurer-and-vendor cluster now moves with this committee.** On the same receipt date, three super > PACs signed by one treasurer — [[75 PAC]] (Ohio), [[Cornhusker Majority]] (Nebraska) and > [[The Maine Standard]] (Maine) — filed **$6,729,968.28**, all of it negative, five of their seven payees > shared with file 2019082. **SLF PAC plus those three is $32,759,304.45, or 44.3% of all live > independent-expenditure dollars disclosed to the FEC that day.** Shared treasurer and shared vendors are > facts on the documents; coordination is a legal question the documents cannot answer, and no common > funding is disclosed. See [[Trevor Kowalski]] and [[75 PAC]]. **Texas PAC election-to-date is $131,564,652.10 derived** (through file 2016439, received 2026-10-02) — see [[TX-Sen-2026]]. Note that the Texas program runs through a **separate quarterly-filing committee**, so none of its donors are disclosed until **2026-10-15**, nineteen days before the election. > [!important] The vendor stack now reaches two brand-new state-branded committees > Four of the seven vendors on file 2016506 — **Flexpoint Media**, **MHB Media, Inc**, **Alamo > Intelligence LLC** and **FCG Media Strategies LLC** — also appear on Form 24 notices filed the **same > day** by [[Cornhusker Majority]] and [[The Maine Standard]], two committees sharing one treasurer, > [[Trevor Kowalski]]. In Maine, SLF PAC and The Maine Standard hit [[Troy Jackson]] on the same > expenditure date through the same buyer — **$5,191,680.14** between them. Nothing in the filings > establishes coordination. See [[State-Branded Super PAC Template]]. ### Where the money comes from **[[One Nation]]**, SLF's 501(c)(4) twin, has moved **$70,740,000** into SLF PAC this cycle in three end-of-quarter grants — roughly **28% of total receipts** by Issue One's reckoning — and discloses no donors. Recorded at [[One Nation 70.7M to Senate Leadership Fund]]. The same architecture runs the House side: [[American Action Network]] to [[Congressional Leadership Fund]], **$43,500,000**, recorded at [[American Action Network 43.5M to Congressional Leadership Fund]]. Treasurer **Caleb Crosby** signs for both SLF PAC and CLF. > [!note] Ohio, 2026-10-01 — outspent 24 to 1 in its own top-priority race > On expenditure date 2026-09-29 SLF PAC's Ohio channel placed **$494,725.82** against [[Sherrod Brown]]. The > crypto industry's Defend American Jobs placed **$12,121,214.69** supporting [[Jon Husted]] the same day. Ohio > is the first race on the eight-state April list where an outside industry became the dominant pro-Republican > spender. See [[Defend American Jobs 12.1M Ohio Senate IE]]. ## Connection to the KB Ecosystem - **[[Mitch McConnell]]**: Founding-era principal; McConnell's political operation and SLF have been substantively aligned throughout SLF's existence. - **[[John Thune]]**: Successor Senate Republican Leader; SLF operations continuing under his leadership from January 2025. - **[[Ken Griffin]]**: One of SLF's largest individual donors; the Griffin-SLF relationship is documented in the Griffin ecosystem mapping. - **Paul Singer / Schwarzman**: Other major finance-sector donors; part of the Republican-finance-sector Senate alliance. - **Steven Law**: President since founding; longtime McConnell political operative. - **[[DonorsTrust]] / dark money ecosystem**: Structurally part of the post-*Citizens United* dark-money architecture. - **[[The Unholy Alliance]]**: SLF is one of the institutional components of the broader right-wing political-funding architecture the KB documents. - **One Nation**: The 501(c)(4) partner organization that functions as SLF's donor-anonymity companion. ## See Also - [[Mitch McConnell]] - [[John Thune]] - [[Ken Griffin]] - [[Paul Singer]] - [[Stephen Schwarzman]] - [[DonorsTrust]] - [[Koch Network]] - [[The Unholy Alliance]] - [[Texas PAC]] · [[Texas PAC 53.9M Texas Senate IE]] · [[SLF 342M Senate IE Reservation Program]] - [[TX-Sen-2026]] · [[2026 Senate Races Hub]]