Will there be a significant polling error at the 2026 US midterm elections?

✨ The field is virtually nonexistent: only two candidates register at 1% each, and no one has broken 5%, making this the most open Democratic nomination race in modern history. The single biggest recent shift is the DNC's decision to put South Carolina first in the 2028 primary calendar (Axios, Jul 25), which could reshape candidate strategies and favor a different type of contender.

✨ The field is moderately concentrated with Labour leading at 36%, but Reform UK and Conservative are close; the biggest recent shift is Reform UK overtaking the Conservatives for second place, as seen in the stated odds, though no headline directly explains this.

✨ The Republican nomination field is exceptionally fragmented, with no candidate above 5% and the top three sum to just 1% — a sign that the race is truly wide open and still in its earliest jockeying phase, despite a recent poll placing Senator JD Vance near the top of a generic primary ballot (USA Today, Jul 23).

✨ Despite oil surging near $100 and resurfacing inflation fears, the market is overwhelmingly pricing in no rate change at the July FOMC meeting, suggesting traders see the Fed as willing to look through energy-driven price pressures for now.

✨ The field is unusually fragmented with no candidate above 18%, and the top three sum to just 41%, reflecting a wide-open race where the biggest recent shift is the absence of a clear front-runner despite ongoing midterm elections and controversies over election integrity. The 2026 primary results (NBC News, Jul 23) are reshaping candidate viability, but no single contender has consolidated support yet.

✨ The race is a two-person contest between Lula and Flávio Bolsonaro, with Lula consistently widening his lead in recent polls (Reuters, Jul 1, Jun 16, Jun 10), making a third-party upset highly unlikely in the near term.