Investors place chances of a Democratic House at 91.3 to 93 percent.
Kalkine summarized broker analysis ahead of the November 3 vote, noting the Senate remains the open question for investors. The analysis flagged AI stocks as the sharpest pressure point under a blue wave scenario and noted the S and P 500 was higher 12 months after all 19 midterms since 1950.
House expectations are high; Senate remains uncertain
A Democratic House is priced at 91.3 to 93 percent ahead of the November 3 vote, according to Kalkine’s summary of broker analysis. The report, published Oct 31, 2026 at 12:30 PM ET, puts the VIX near 18.60 heading into Tuesday.
The Senate remains the unresolved question for investors, according to Kalkine. That leaves the outlook for control of Congress less settled than the House pricing alone might suggest.
AI exposure and the midterm record
The broker analysis identified AI stocks as the area facing the greatest pressure in a blue wave scenario, Kalkine reported. That is a scenario-specific assessment, rather than a forecast that such an election outcome will occur.
Kalkine also highlighted a historical pattern: the S and P 500 stood higher 12 months after each of the 19 midterm elections since 1950. That record provides context for the election discussion, but does not establish how stocks will perform after this vote.
What it means for prediction markets
- House pricing reflects a strong expectation: The 91.3 to 93 percent range favors a Democratic House, without making the outcome certain.
- Senate uncertainty remains central: The unresolved Senate contest matters when distinguishing a Democratic House outcome from the broader blue wave scenario discussed in the analysis.
- Market scenarios are not election probabilities: The warning about AI stocks and the positive historical record for the S and P 500 describe potential consequences and past performance, not separate estimates of who will win.
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