And The Winner Is..

SLF PAC, with $209.87 million in 2026 outside spending, holding first place from the prior period. Its largest support outlays back Jon Husted in the Ohio U.S. Senate race ($961,273) and Michael J. Rogers in the Michigan U.S. Senate race ($747,656); on the opposition side, it has spent $54.16 million against Sherrod Brown in Ohio, $31.70 million against Abdul El-Sayed in Michigan, and $30.23 million against Roy Cooper in the North Carolina U.S. Senate race. For the week of Oct. 5–11, SLF PAC reported $557,222 in support spending and $33.24 million in opposition spending. ​

The runner-up is No Going Back PAC Inc., with $159.55 million in 2026 outside spending, ranked second among the top three committees. Its largest support expenditures go to Jon Husted ($7.62 million) and Dan Sullivan ($3.55 million), while its largest opposition outlays target Sherrod Brown ($20.15 million), Abdul El-Sayed ($19.37 million), and Roy Cooper ($8.82 million). For the week of Oct. 5–11, No Going Back PAC reported $7.72 million in support spending and $21.66 million in opposition spending.

Holding third is Texas PAC, which states its purpose as ensuring voters have the facts before they vote, with $140.23 million in cumulative 2026 outside spending. Its spending is concentrated entirely in the Texas U.S. Senate race, with $69.59 million supporting Ken Paxton and $70.64 million opposing James Talarico. Texas PAC's spending for the week of Oct. 5–11 totaled $6.63 million, up 216.33 percent from $2.10 million the prior week, the only one of the three PACs to exceed the 25 percent threshold.. The Texas U.S. Senate Seat (Class II) is the most heavily funded race across all three PACs at $145.84 million in combined reported spending; the general election is scheduled for Nov. 3, 2026, and the race carries a "Toss-up" rating.