'Pop-up' super PACs spent $637 million in midterms before donors were disclosed

Super PACs formed in the final weeks before the midterms have poured about $637 million into congressional races. Much of it was spent before voters could see who gave the money, according to a CNBC analysis of Federal Election Commission (FEC) filings through Oct. 29 ¹.

A super PAC is a political group that can raise and spend unlimited money to influence elections, as long as it does not coordinate with a campaign. CNBC found 22 such groups that registered in the last 10 weeks before Election Day and have each spent at least $1 million on House or Senate races ¹.

How the timing works

Federal law requires super PACs to report large spending within 24 or 48 hours. Their donors, however, are disclosed less often, in periodic reports ¹.

One example is Our Heritage Matters, which registered on Oct. 15 and began spending five days later. It had spent about $1.2 million across 10 races by Oct. 29. Its first donor report is not due until Dec. 3, a month after Election Day ¹.

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The $637 million is about one-sixth of all independent spending reported in House and Senate races this cycle. At the same point in 2022, five comparable groups had spent about $18 million. The number of million-dollar late-forming groups has more than quadrupled since then, and their spending has grown nearly 35-fold ¹.

Both parties, but not equally

Both parties use the tactic. Republican-linked groups have spent about twice what Democratic-linked ones have ¹.

On the Republican side, No Going Back PAC formed Sept. 1 and began spending three days later. Its first financial report came Oct. 20. By then it had spent about $187.8 million, and the report showed MAGA Inc., President Donald Trump's main super PAC, had given it $200 million ¹.

Texas PAC began spending to help Republican Ken Paxton in the Texas Senate race. Elon Musk's role was not public until Oct. 12, more than a month after the spending began. FEC filings later showed he had given the Senate Leadership Fund, the GOP's main Senate super PAC, $158 million, and matching amounts were sent on to Texas PAC. By Oct. 29 it had spent about $181.6 million ¹.

Democrats use the tactic too. Lower Costs Now formed Sept. 10 and did not show its financing until Oct. 15. That report showed Senate Majority PAC had given it $23 million ¹. Another Democratic group, Texas Forever, named Senate Majority PAC as an affiliate in its first filing ¹.

What experts say

The reason for this is almost entirely to avoid disclosure, even if just temporarily,

Saurav Ghosh of the Campaign Legal Center, a nonpartisan nonprofit, said these groups are built to spend before donors become known ¹. He described them as "a vehicle designed to emerge from nowhere and spend a bunch of money on an election" ¹.

What happens next

Democrats in Congress have proposed a fix. Reps. Jason Crow of Colorado and Chris Deluzio of Pennsylvania would require PACs to report donations over $1,000 within 48 hours during the 20 days before an election ². Crow said: "The American people are tired of dark money distorting our politics. Congress must clean up corruption and strengthen our democracy." ²

That matters because Republicans control the House, the Senate and the White House. The bill is reported to have little chance of quickly becoming law ². Meanwhile, most of the donors behind these groups will not be named until after voters have cast their ballots.

The Record

1. Oct 12, 2026Elon Musk's role in funding the Texas PAC spending became public, more than a month after the spending began ¹.
2. Oct 15, 2026Our Heritage Matters registered with the FEC, after a key reporting deadline; the same day, filings showed Senate Majority PAC gave Lower Costs Now $23 million ¹.
3. Oct 29, 2026The 22 late-forming super PACs had reported roughly $637 million in independent expenditures, per CNBC's analysis of FEC filings ¹.
4. Dec 3, 2026Our Heritage Matters' first regular donor report is due, a month after Election Day ¹.

Sources

1. CNBC, “'Pop-up' super PACs pour $637 million into 2026 midterm races” (2026-10-31). cnbc.com/2026/10/31/2026-midterm-election-super-pacs-donor-d
2. HuffPost (via Rep. Jason Crow's House site), “Democrats are taking aim at one of the most deceptive practices in American elections” (2026-06-05). crow.house.gov/media/in-the-news/huffpost-democrats-are-taki

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