America's deteriorating public finances have become the worry investors cannot shake, whatever happens when voters choose a new Congress on Tuesday, November 3, 2026. With the national debt above $40 trillion and the annual budget deficit running at roughly $2 trillion, market strategists say the midterm elections may change the tone of the fiscal debate, but they are unlikely to change its arithmetic.

That is the blunt message from investors surveyed by Reuters days before the vote. Concerns over the fiscal outlook have already weakened confidence in United States Treasuries this year, as heavy borrowing and rising interest costs push the government to issue ever more debt. And with a December 11 deadline to agree on federal funding looming in the lame-duck session, the fiscal question will still be waiting the morning after the election, whoever wins.

Key Points

• The US national debt has topped $40 trillion, and the deficit is expected to stay near 6% of gross domestic product, about $2 trillion this year.
• Investors say neither a Republican hold nor a Democratic victory offers an easy fix, because entitlement spending and interest payments keep rising regardless.
• Prediction markets still favour Democratic majorities in both chambers, while some banks, including Nomura, see a split Congress as possible.
• A Democratic Congress could modestly slow spending growth, which some bond investors see as positive for long-dated Treasuries and the dollar.
• The next flashpoints are the December 11 funding deadline, the Treasury's November 4 refunding announcement and the debt-ceiling fight expected in late 2027.

What Happened

Reuters reported on October 30 that the United States' deteriorating fiscal picture has become a nagging worry for investors, who see no easy solutions however the midterm elections play out. After two years of Republicans controlling Congress and the presidency, Democratic majorities in both the Senate and the House are the most likely outcome on Tuesday, according to prediction markets Kalshi and Polymarket. A recent Reuters poll showed an 11-point Democratic advantage, bolstering Democratic hopes of seizing control of either chamber.

Yet the same investors who expect a change of control are strikingly sceptical that it will repair the budget. If Republicans retain control, investors expect more of the same pressures on the public purse. If Democrats win, political gridlock may make it harder to agree on new spending, yet meaningful fiscal consolidation is unlikely, investors said. The deficit is expected to remain around 6% of GDP, with a $2 trillion budget gap this year.

Chris Maxey, chief market strategist at Wealthspire, summed up the bind in a single sentence: "It really does come back to where the current deficit is, the amount of debt outstanding, and the rising interest costs associated with it." A Democratic win, he said, will not necessarily change the Treasury's strategy to finance the deficit.

The market backdrop makes the warning harder to ignore. The Federal Reserve left interest rates unchanged this week and upgraded its assessment of the economy to "strong" from "solid", while markets price about an 80% chance of a rate increase in December. September payrolls rose by a lower-than-expected 29,000, unemployment stood at 4.2%, and the October jobs report due on Friday, November 6, will offer fresh guidance on the Fed's next move. Higher-for-longer rates mean higher interest bills on a debt pile that is already enormous, and that feedback loop is exactly what bond investors fear.

Background: How the Debt Reached $40 Trillion

The $40 trillion milestone did not arrive overnight. Years of large deficits, punctuated by pandemic-era emergency spending, tax cuts and, more recently, rising entitlement outlays, have steadily added to the stock of federal debt. Interest payments alone now consume a growing share of the budget, so even holding spending flat would still leave the government borrowing heavily simply to service what it already owes.

While a Democratic sweep could constrain additional tax cuts and limit increases in discretionary spending, analysts told Reuters, rising entitlement costs such as Social Security and Medicare, as well as interest payments, would continue to drive borrowing, leaving little scope to materially reduce the deficit. George Bory, chief investment strategist for fixed income at Allspring Global Investments, said government spending is "pretty well entrenched", and with deficits likely to stay large over the next few years, a change in congressional control may not significantly reduce borrowing needs.

That structural reality explains why the fiscal debate feels so different from the campaign rhetoric. Republicans have historically aligned themselves with fiscal conservatism, promoting lower taxes, smaller government and spending restraint. In practice, however, those policies have not always produced smaller budget deficits or lower national debt, Reuters noted. The result is a credibility problem for both parties: one promises restraint it has not delivered, the other promises programmes the budget may not easily afford.

The funding calendar adds urgency. Congress has postponed a contentious debate over fiscal 2027 spending until after the midterms, setting up a December 11 deadline to reach a funding agreement. Lawmakers will return after Tuesday's vote with some members having lost their seats and party control of the next Congress possibly changed, and an outgoing majority will have to decide whether to pass full-year funding or leave the fight to the new Congress in January. Both parties want to avoid a holiday shutdown, but the compressed timetable leaves little room for error.

US Fiscal Deterioration: Why Investors Are Worried

For bond investors, the fiscal deterioration matters because it directly affects supply. Persistent shortfalls and growing interest expenses are expected to keep Treasury borrowing needs elevated for years, which means more bonds competing for buyers' money. When supply rises faster than demand, prices fall and yields rise, raising borrowing costs for households, companies and the government itself.

Some investors think a Democratic victory could be marginally positive for Treasuries and the dollar in the long run, if Democrats manage to restrain spending. "The trajectory of spending could flatten under a Democratic Congress because it forces some compromise and the compromise might be for less spending in some of the pet projects of the president," Bory said. "On balance, the rate of change in spending could start to decelerate and that could be positive for the bond market," especially on the long end of the curve, which is sensitive to the fiscal outlook.

Karl Schamotta, chief market strategist at Corpay, made a similar point about the currency: Democratic strength could lift the dollar in the short term, as it would ease concerns over President Donald Trump's fiscal, trade and foreign policies. That, he said, would reduce the risk premium investors demand to hold US assets. In other words, divided government is seen by some as a stabiliser, not because it solves the debt problem, but because it limits the scope for either side to make it much worse, quickly.

Not everyone is so sanguine. Bond manager Pimco said in a recent research note that spending would likely increase under both election scenarios while the deficit would expand. "We could see even more spending, especially if the Senate flips, as Democrats will have more power in the upcoming debt ceiling and spending negotiations," wrote Libby Cantrill, Pimco's head of public policy. For Pimco, a change of control could just as easily mean more spending leverage for the winners, not less.

The worst outcome for the bond market, some investors said, could be the status quo. Steve Englander, head of G10 FX research and North America macro strategy at Standard Chartered, said investors no longer view Republicans as the party of fiscal restraint, and if they keep control of both chambers, bond prices would respond negatively. The logic is uncomfortable for the party of small government: markets have stopped pricing in restraint from a party that has presided over rising debt, so continuity now reads as confirmation rather than reassurance.

Reactions and Quotes

The investor verdict, gathered by Reuters, was unusually consistent across firms that normally disagree about markets. Maxey's framing — deficit, debt outstanding, rising interest costs — was echoed by strategists who stressed that the election changes the politics of borrowing more than the volume of it.

Bory's "pretty well entrenched" description of spending captured the structural point: entitlements and interest are effectively on autopilot, and discretionary spending, the part Congress argues about most loudly, is a shrinking share of the total. His hope that compromise could flatten the trajectory of spending was the most optimistic note in the survey, and even that was framed as a deceleration, not a reversal.

Schamotta's dollar argument added a currency dimension. If a Democratic win calms fears about fiscal, trade and foreign policy, foreign buyers may demand less compensation for holding dollar assets, supporting both the currency and Treasury prices. It is a reminder that the fiscal story is not only a domestic budget story: the dollar's reserve-currency role means the whole world holds a stake in how Washington manages its debt.

Cantrill's warning cut the other way, reminding readers that divided government also hands the minority party leverage in must-pass negotiations. The debt ceiling, in particular, becomes a bargaining chip, and concessions extracted in those talks can cost money rather than save it. Englander's bluntness about the Republican brand completed the picture: after years in which deficits rose under both parties, markets judge actions, not labels.

Chip Hughey, managing director of fixed income at Truist Wealth in Richmond, Virginia, offered the soberest summary of all: "Whoever wins in the House and Senate, the margin is likely to be relatively slim, so we wouldn't expect any kind of transformational changes." He added: "I would suspect that over the course of the next two years, the focus and work are going to intensify around government debt issuance and deficits."

Why It Matters

The fiscal deterioration matters far beyond trading floors because Treasury yields set the benchmark for almost everything else Americans borrow to buy: mortgages, car loans, corporate bonds and state and local debt. If heavy government issuance pushes long-term yields higher, households pay more for homes and businesses pay more to invest, even if the Federal Reserve is cutting or holding short-term rates steady.

It also constrains Washington's freedom in a crisis. A government already borrowing 6% of GDP in a growing economy has less room to respond to the next recession, war or pandemic without alarming the bond market. That loss of fiscal space is gradual and easy to ignore in good times, which is precisely why investors keep raising it: the bill arrives when the economy can least afford it.

The politics matter too. Voters go to the polls on Tuesday with the economy ranked as their top concern — a Pew Research survey in early October found 84% of registered voters called the economy very important to their vote — yet neither party is offering a credible path to balance. Consumer sentiment, measured by the University of Michigan index, is now about 10% below where it was a year ago despite strong consumer spending, robust business investment and low unemployment. That gap between headline growth and lived experience is the backdrop against which the fiscal argument will be fought for the next two years.

Finally, the debt story intersects with the other great market theme of 2026: artificial intelligence. Wall Street expects a Democratic Congress to push for stricter AI oversight and to scrutinise Wall Street banks and crypto firms, while local governments face pressure to block new data centres. AI policy fears have already gripped stock and bond traders in the run-up to the vote, and a Congress determined to rein in Big Tech could reshape the sector that has driven much of the market's recent gains.

What Happens Next

The calendar after Tuesday is crowded. The Treasury's quarterly refunding announcement is expected on Wednesday, November 4, and will show how the government plans to finance the deficit in the coming months — the single most concrete fiscal signal markets will get all month. The October jobs report follows on Friday, November 6, and could shift expectations for the Fed's December decision.

Then comes the December 11 funding deadline. If Congress cannot agree on fiscal 2027 spending, another shutdown fight looms just before the holidays, with economic data delayed and federal services disrupted at the worst possible moment. An outgoing majority could pass full-year funding, punt with another stopgap, or leave the problem to a new Congress seated in January. Each option carries its own market risk.

Beyond that lies the debt ceiling. While the date when the borrowing limit needs to be raised is unlikely to occur until late 2027, Democrats could use the so-called X-date as leverage in negotiations with Republicans over spending and tax policy, pressing for concessions in exchange for votes to address the limit. A split Congress could make those talks more contentious, increasing the risk of a prolonged funding standoff, investors warned.

Ultimately, investors said, the election may marginally affect the budget outlook, but it is unlikely to dispel concerns about rising deficits that have spilled across asset classes. The margin in either chamber is likely to be slim, transformational change is unlikely, and the work of financing a $40 trillion debt pile will intensify over the next two years — whoever holds the gavel.

Frequently Asked Questions

How big is the US national debt?

The national debt has topped $40 trillion, and persistent deficits are fuelling expectations of heavier debt issuance in the years ahead, according to Reuters reporting on October 30, 2026.

How large is the US budget deficit?

The deficit is expected to remain around 6% of gross domestic product, with a $2 trillion budget gap this year, driven by entitlement spending, interest payments and discretionary outlays.

Will the midterm elections fix the deficit?

Investors say probably not. A Democratic win could slow spending growth through compromise, but entitlement costs and interest payments will keep borrowing high; a Republican hold is seen by some as negative for bonds because markets no longer view the party as fiscally restrained.

What is the December 11 funding deadline?

Congress postponed debate over fiscal 2027 spending until after the midterms, setting up a December 11 deadline to reach a funding agreement. Failure to agree could trigger another government shutdown fight in the lame-duck session.

When does the debt ceiling become a problem?

The borrowing limit is unlikely to need raising until late 2027, but it is already shaping negotiations, because either party may use the X-date as leverage to extract spending or tax concessions.

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