US midterms and AI concerns might erode confidence in the US Dollar, experts agree

At 101.66 at the time of writing, the US Dollar Index (DXY) remains near the lower end of its October range, around 100.40. Although the US Dollar (USD) has recovered most of its earlier losses on Monday, it remains under pressure as investors hesitate to maintain sizeable long positions ahead of the US midterm elections. Mounting concerns over an AI bubble present a further risk.

A sharp acceleration in Gross Domestic Product (GDP) growth in 3Q, alongside inflation still well above the Federal Reserve's (Fed) target, has maintained pressure for further interest rate rises. Last week's macroeconomic releases therefore lent weight to the narrative of US economic exceptionalism. Yet the US Dollar Index has drawn little support from the figures, with gains remaining constrained over the past two weeks.

TMGM Analysis: Financial Market News, Economic Calendar & Market Insights

US Dollar gains stall as midterm elections and tech sell-off weigh

Tuesday's vote could bring a “damaging defeat for the Republicans could put a dampener on US Dollar strength”, analysts at MUFG/BTMU warn. In their view, that result would “limit room for further fiscal stimulus” while potentially directing market attention towards “less market friendly policies beyond the current Presidency,” introducing further political uncertainty into the US Dollar outlook.

Positioning and political uncertainty also feature prominently in ING's assessment of the near-term outlook. The bank observes that “the main risk for the Dollar today is some precautionary unwinding of net-long positions ahead of Tuesday’s US midterm elections.”

According to ING, “a Democratic sweep is trading around 68% in prediction markets,” and that outcome “could be seen as slightly negative for the US Dollar from a few angles, from higher risk of government shutdown and gridlock on debt ceiling negotiations to potential damage to already shaky AI-related sentiment.” With those risks in mind, the bank concludes that “we’d be cautious in chasing the USD upside in the next few days.”

Equity markets, by contrast, are the main concern for BBH experts, who warn that the “tech sell-off can keep USD on defensive in the near term.” Nevertheless, BBH argues that “strong US economic activity and rising price pressures reinforce the Fed’s hawkish bias,” leaving “rate differentials” likely to remain “supportive of USD” despite weaker near-term sentiment.

US midterm elections: key questions answered

Held at the midpoint of a president's four-year term, the US midterm elections are federal elections in which voters elect all 435 members of the House of Representatives and roughly one-third of the Senate. In many states, voters also select governors and other state and local officials.

Tuesday, 3 November 2026 is Election Day, in line with federal law requiring the vote to take place on the Tuesday following November's first Monday. Many states already have early voting and postal voting under way.

Control of both chambers of Congress for the final two years of President Donald Trump's term is determined by the midterm results. In each chamber, the majority party directs the legislative agenda and selects committee leaders. A Senate majority also controls the confirmation of judges and senior officials.

Presidential elections take place every four years, with the next due in November 2028, so the president is not on the midterm ballot. Nevertheless, midterms are frequently regarded as a verdict on the incumbent president's party, which has historically tended to lose seats in the House.

A limited and temporary move in the US Dollar, rather than a sustained trend, is what most analysts anticipate. Markets already partly reflect the widely held expectation of a divided Congress, although Treasury yields could respond more markedly to the results. Results that increase the prospect of fiscal stimulus typically push yields and the US Dollar higher; conversely, legislative deadlock that restrains additional spending can weigh on both. Disputes over funding or the debt ceiling may also briefly support the Dollar through safe-haven demand. Across a six- to twelve-month horizon, economic growth and Federal Reserve policy carry more weight than the election result.

Weakness ahead of midterms has historically given way to strength in US equities after the vote. Since 1950, the S&P 500 has stood higher 12 months after each midterm election: 19 out of 19 occasions, with gains averaging about 15%. Analysts attribute this pattern to the easing of uncertainty after the results become clear. Past performance does not guarantee future returns, and some strategists note that the elevated valuations of 2026 could challenge that record.

By reducing the likelihood of far-reaching changes to taxation, spending and regulation, political deadlock has often made divided government attractive to markets. With a Republican president in office, the S&P 500 has historically performed well in the years after midterm elections that leave Congress under split control. Funding deadlines, disputes over the debt ceiling and congressional investigations nevertheless pose risks that can increase short-term volatility.