The 2026 United States midterm election cycle is on track to shatter all prior campaign spending records, with independent campaign finance watchdog Open Secrets projecting total expenditures will surge to nearly $11.9 billion (£9 billion) by the time polls close on 3 November. This figure represents a 30% jump from the total spending recorded during the 2022 midterms, marking an unprecedented escalation of financial investment in federal off-year elections. A core driver of this historic spending surge is the outsized activity of independent expenditure groups known as Super Political Action Committees (Super PACs), which operate under vastly different regulatory frameworks than traditional campaign entities. While federal election rules cap direct contributions from individual donors, formal political parties, and standard PACs to specific candidates, Super PACs are permitted to accept unlimited financial backing from individuals, corporations, labor unions, and other political committees. Though they are legally barred from transferring funds directly to candidate campaigns, they may deploy unlimited resources to support or oppose candidates through independent, uncoordinated advocacy. The most recent filings submitted to the Federal Election Commission (FEC) through mid-October already document over $9.5 billion in total spending across the midterm cycle, with PACs and Super PACs accounting for more than half that sum at roughly $5.5 billion. Notably, spending by these outside groups has nearly doubled in the final two months leading up to election day. Full, finalized spending totals will not be publicly available until after ballots are counted, but Open Secrets’ projection is derived from verified historical spending trends across prior election cycles. Data from the Brennan Center for Justice, a nonpartisan liberal-leaning policy institute, confirms that the top 40 individual donors alone had contributed a combined $2.4 billion to political efforts as of 14 October, a new all-time high for that stage of a midterm election. “Spending in the 2026 midterms is shattering records, with more of the money coming from the wealthiest donors and groups this election,” noted Michael Beckel, a leading U.S. campaign finance expert. Billionaire tech and industrial magnate Elon Musk stands as the single largest individual donor of the cycle, having poured nearly half a billion dollars into efforts to back Republican candidates across key competitive races. The majority of Musk’s contributions flow into America PAC, a pro-Republican Super PAC he founded in 2024, as well as the Senate Leadership Fund, a major GOP-aligned Senate advocacy group. Over $45 million of that funding has been directed to the high-stakes Texas Senate race, where Musk is backing Republican nominee Ken Paxton against Democratic challenger James Talarico, a strategic choice tied to the fact that many of Musk’s corporate headquarters and operations are based in Texas. America PAC has also allocated roughly $10 million each to competitive Senate contests in Michigan and Ohio. Other major partisan donors have also deployed historic sums: on the Democratic side, billionaire financier George Soros’ two affiliated policy organizations, Geosor Corp and the Fund for Policy Reform, have contributed a combined $102 million to progressive advocacy groups, while former New York City mayor and business magnate Michael Bloomberg has emerged as the top individual Democratic donor with over $60 million in disbursements. For Republican-aligned causes, prominent donors including Jeff Yass, the head of one of the world’s largest trading firms, and Richard and Elizabeth Uihlein, owners of a major U.S. business supply corporation, have each donated more than $100 million as documented in public FEC filings. Beyond individual high-net-worth donors, major industry groups have also ramped up their political spending, with the crypto sector emerging as a particularly active new player. Brendan J. Glavin, a spokesperson for Open Secrets, confirmed that leading crypto firms Ripple and Coinbase have collectively contributed $63 million to Super PACs focused on advancing digital asset industry policy priorities. While campaign expenditures cover a range of operational costs including on-the-ground voter outreach, rally hosting, staff salaries, and internal opinion polling, the overwhelming majority of funds are directed to political advertising. Ad tracking firm AdImpact reports that total political ad spending across the cycle had already hit $11.15 billion by the end of October. Traditional broadcast television remains the single largest recipient of these ad budgets, though digital ad expenditures have continued to climb at a rapid pace. The highest concentration of ad spending is focused on the competitive Senate races in Michigan, Texas, and Ohio, followed by closely watched contests in Iowa and Maine, as parties and outside groups fight for control of the U.S. Congress.
US midterms campaign ‘shattering’ spending records to be most expensive ever
