# Will House Control be Democratic AND Senate Control be Republican for Feb 2027

> D-House, D-Senate leads at 39%, runner-up 37% across 3 winner-take-all outcomes — refreshed 22 min ago.

URL: https://simplefunctions.dev/odds/balancepowercombo
Updated: 2026-06-26T06:20:51.259Z
Category: politics · Topic: election-2026
Status: active
Closes: 2027-02-01

## Headline

- Leader: D-House, D-Senate at 39%
- Runner-up: D-House, R-Senate at 37%
- Outcomes: 3 (winner-take-all)
- Venue: Kalshi (3 contracts)
- 24h volume: $16K

## Bound contracts (3)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| D-House, D-Senate | 39¢ | −1pp | $5K | kalshi | /markets/will-house-control-be-democratic-and-senate-contro-kalshi-kxbalancepowercombo-27feb-dd |
| D-House, R-Senate | 37¢ | +2pp | $2K | kalshi | /markets/will-house-control-be-democratic-and-senate-contro-kalshi-kxbalancepowercombo-27feb-dr |
| R-House, R-Senate | 21¢ | +1pp | $9K | kalshi | /markets/will-house-control-be-republican-and-senate-contro-kalshi-kxbalancepowercombo-27feb-rr |

## 30-day trajectory

| Day | D-House, D-Senate | D-House, R-Senate | R-House, R-Senate |
|---|---|---|---|
| 2026-05-27 | 43 | 32 | — |
| 2026-05-28 | 41 | 32 | 22 |
| 2026-06-09 | 40 | — | 21 |
| 2026-06-12 | — | 36 | — |
| 2026-06-13 | 41 | 36 | — |
| 2026-06-18 | — | 35 | 23 |
| 2026-06-19 | 39 | 35 | — |
| 2026-06-23 | — | 37 | 22 |
| 2026-06-25 | — | — | 22 |

_26 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## Analysis

This 31% probability represents the chance that Democrats control the House while Republicans control the Senate in February 2027, following the 2026 midterm elections. The current level reflects relatively weak Democratic positioning in Senate races, where they defend numerous seats in competitive states, while House control remains more contested. Related market contracts show Republicans favored for Senate (19¢ for R-R split) and Democrats slightly ahead for holding both chambers (44¢ for D-D), suggesting a divided government is viewed as plausible but less likely than partisan sweeps. The key catalyst resolving this uncertainty is the November 2026 midterm election, which will determine actual seat distributions. Before then, polling trends, candidate recruitment, and spending patterns in competitive districts and states will gradually shift probabilities as clearer electoral dynamics emerge.

### Key factors

- The 36¢ contract for D-House/R-Senate is currently the second-lowest probability among split-control scenarios, suggesting markets view this outcome as less likely than Republicans holding both chambers (19¢) or Democrats holding both (44¢)
- Senate Democrats defend significantly more seats than Republicans in 2026, creating structural disadvantage in gaining majority while Republicans hold seats in competitive terrain
- House control appears more volatile in market pricing relative to Senate, with Democratic seat-holding contracts ranging from 43¢ to 76¢ depending on threshold, indicating genuine uncertainty about chamber outcomes
- The November 5, 2026 midterm election will be the primary data point resolving this question, with campaign performance metrics and polling through October providing leading indicators
- Historical patterns show split-control outcomes relatively uncommon in midterms compared to unified sweeps, which may suppress this probability relative to pure probabilistic scenarios

## Methodology

Headline is the **leader's price**, not an arithmetic mean — averaging disjoint winner-take-all outcomes is meaningless. Per-outcome prices come from the venue's last-traded mid; cross-venue values are simple means across contracts on each venue.

## How to use this data

- HTML: https://simplefunctions.dev/odds/balancepowercombo
- JSON: https://simplefunctions.dev/api/public/odds?slug=balancepowercombo
- Topic hub: https://simplefunctions.dev/predictions/election-2026

## License

CC-BY-4.0. Attribute "SimpleFunctions" with a link to https://simplefunctions.dev. See https://simplefunctions.dev/legal for terms.