Key takeaways

  • Analysts expect more regulatory scrutiny of the AI infrastructure buildout, but they don’t view it as a major threat to demand.
  • A divided government means gridlock in Congress, which could limit the passage of major new legislation.
  • That gridlock also makes debt ceiling standoffs more likely, analysts say, while government borrowing and deficit spending are likely to remain high.

The Democratic Party victory sweeping Congress and state capitols is more than a political story. Analysts say it could influence key trends driving stock and bond markets.

Chief among them is the potential to slow (but not derail) the massive artificial intelligence infrastructure buildout that has powered stock market gains for the better part of three years. However, even with control of both chambers of Congress, analysts say it’s unlikely that Democrats will be able to pass major legislation while President Donald Trump remains in office. They say standoffs over the debt ceiling are possible, and that the high government borrowing that’s helped drive up bond yields will continue.

Here’s more from Wall Street about the election’s biggest impacts on financial markets.

Slowing, but not stopping, the AI buildout boom

“Democratic wins at the state and local level are likely to have significant implications … we expect Democratic governors in Texas, Georgia, and Michigan to impose conditional moratoria pending new legislation restricting data centers … However, since data centers are low on the list of priorities for voters this election, we expect that the issue will fade somewhat in importance in the ensuing months and that these moratoria will not be long-lived if they are enacted.

—Goldman Sachs analysts, led by chief economist Jan Hatzius

“AI volatility may pick up on politics, but underlying demand is still solid. Greater congressional oversight will not necessarily derail the AI investment cycle. Broad federal restrictions would face legislative and presidential constraints, while state and local rules remain more important for data center timing and location. The composition of state governments, including the result in Texas, may prove more consequential for individual data center projects than the change in congressional control.”

—UBS analysts led by Ulrike Hoffmann-Burchardi, chief investment officer, Americas, and global head of equities, UBS Global Wealth Management

“Much of the data center capacity expected to come online in 2027 is already under construction, limiting the immediate impact of restrictions on new permits. However, a larger share of the 2028 pipeline remains in the planning stages and is therefore more vulnerable to permitting delays and regulatory uncertainty. While tighter regulations may lead to some relocation rather than outright cancellation of projects, a broader tightening of restrictions across states could slow the pace of AI investment and weaken an important driver of US economic growth.

—Nomura research analysts, led by Aichi Amemiya

“Election outcomes could influence decisions on permitting and construction in some jurisdictions, but the implications for the pace and location of AI infrastructure development will vary by location and local dynamics … The ebb and flow of AI investment expectations could ease or intensify competition for capital, driving swings in bond yields around structurally higher levels sustained by heavy government borrowing ... The ebb and flow of AI investment expectations could ease or intensify competition for capital, driving swings in bond yields around structurally higher levels sustained by heavy government borrowing.”

—BlackRock Investment Institute

Expect legislative gridlock

“Divided government takes major sweeping tax and spending policies off the table and halts any of the more extreme policies of the political right and left.”

—Jeff Buchbinder, chief equity strategist at LPL Financial

“Beyond the occasional deal on must-pass legislation, the next two years will likely be characterized by gridlock, with the White House increasingly focused on foreign policy while Democrats concentrate on ‘messaging bills’ and investigations in order to set the narrative ahead of the 2028 presidential elections.”

—Morningstar DBRS analysts led by Michael Heydt, senior vice president, sector lead, global sovereign ratings

“Gridlock is good. Markets have historically fared better when no single party can push through legislation on party-line votes. The checks and balances that accompany divided control, including the president’s veto authority, tend to limit abrupt changes to the rules under which businesses and investors operate. This sort of backdrop has generally been supportive for equities.”

—Jason Pride, chief of investment strategy and research at Glenmede

Debt ceiling standoffs, government shutdowns are possible

“However, an inter-branch standoff could set the stage for government shutdowns and brinksmanship over the debt ceiling … the outgoing Republican-led Congress will need to pass another [continuing resolution] to fund the government until the incoming Democratic-led Congress is sworn in on January 3, 2027, or run the risk of a government shutdown. The debt ceiling will also need to be raised in 2027.

“We expect the executive and legislative branches will reach an agreement to raise the debt ceiling in a timely manner. However, failure to lift the debt ceiling would have adverse implications for the economy and could, if the Treasury materially delays non-debt payments, result in a downgrade of the US credit rating.”

—Morningstar DBRS analysts, led by Michael Heydt, senior vice president, sector lead, global sovereign ratings

“Government funding will need to be extended, and the debt limit raised by next fall, which Democrats are likely to leverage to win policy concessions. It is not yet clear what Democrats will seek in return, but limiting the war with Iran, tariff rollbacks, the reversal of spending cuts, and expanded health benefits appear to be high on the list of priorities.”

—Goldman Sachs analysts, led by chief economist Jan Hatzius

Heavy government spending and borrowing will continue

“A Democratic Congress will constrain major new tax and spending legislation, but substantial federal deficits and Treasury issuance are unlikely to disappear. The immediate market reaction has included declines in equity futures and Treasury yields, reflecting uncertainty about regulation and future fiscal policy. Longer-term interest rates will remain particularly important for equity valuations, housing, real estate and the financing of infrastructure investment.”

—Stephen Dover, chief market strategist and head of the Franklin Templeton Investment Institute

“Trump is likely to push on Republicans to raise the debt ceiling and defense spending before Democrats take office. We believe Trump will push hard. But we are skeptical of success.”

—Dan Clifton, head of policy research for Baird Strategas

“Large deficits and heavy government borrowing are likely to persist, intensifying competition for capital and reinforcing our view of structurally higher interest rates. Historically, policy gridlock has not been bad for risk assets. Debt ceiling standoffs have been the bigger source of market volatility.”

—BlackRock Investment Institute

“Indebtedness and sovereign borrowing risks are key for all countries, including the United States, and it is unlikely that a divided executive and legislative branch will come together for immediate fixes. As bond market investors, we will continue to watch how much latitude lenders give to sovereign borrowers, and this election result complicates potential resolution.”

—Eric Freedman, chief investment officer at Northern Trust Wealth Management