Senate Republicans’ main political groups have shattered off-year fundraising records, pulling in a staggering $85 million during the first six months of 2025 — more than doubling their haul from the same period in 2023.
According to Axios, the Senate Leadership Fund (SLF) and its nonprofit affiliate One Nation have raised unprecedented sums, signaling a strong financial foundation ahead of the 2026 midterms. Together, the two groups now sit on $83 million in cash on hand, positioning the GOP for aggressive early spending in key battlegrounds.
SLF alone has banked $29 million — triple what it held at this point last year and five times more than its mid-cycle total in 2021.
This surge in donations comes in the wake of a leadership shakeup, with Sen. John Thune (R-SD) taking over as Senate Republican Leader following Sen. Mitch McConnell’s decade-long tenure. The transition appears to have energized donors — and the Trump factor is also playing a major role.
“President Trump is more involved than ever,” said SLF Executive Director Alex Latcham, telling Axios that coordination with Trump’s White House is ongoing. “We’re working with them to identify and vet Senate candidates,” he added, describing the collaboration as an advantage, especially during the primaries.
Latcham said regular communication with Trump’s team — including in-person meetings and phone calls — ensures alignment on strategy and candidate support.
In a departure from past election cycles, SLF is deploying funds well ahead of Labor Day. Early ad buys have already launched in swing states such as Georgia, North Carolina, Maine, Alaska, and Nebraska. A major media push in Texas is also underway to bolster Sen. John Cornyn.
Latcham credited the fundraising boom in part to Thune’s assertive outreach efforts, which include frequent travel and direct appeals to donors. The team is also tapping into emerging funding sources, including the crypto sector.
“You’re seeing the crypto community more engaged in politics across the board,” he said.
The $85 million raised so far dwarfs the $38 million brought in by SLF and One Nation during the first half of 2023, and GOP strategists say the cash will help defend the party’s slim Senate majority — and potentially grow it in 2026.
The two groups are already backing key incumbents while scouting strong challengers in upcoming battleground races. Their goal remains clear.
“SLF will continue to be the leading outside force committed to holding and expanding the Republican majority in the Senate,” Latcham said.
With Trump actively involved and donor enthusiasm running high, Republicans believe their financial edge could be a game-changer — not just for the next election, but for long-term control of the upper chamber.