# Will Brent Barker be the Republican nominee for the Senate in Oregon

> Closed. Final outcome: David Brock Smith. Last odds frozen 1 d ago.

URL: https://simplefunctions.dev/odds/senateorr
Updated: 2026-05-23T07:20:12.596Z
Category: politics · Topic: election-2026
Status: resolved
Closes: 2027-05-19

## Headline

- Probability: 35% (liquidity-weighted across 3 contracts)
- Venue: Kalshi (3 contracts)
- 24h volume: $741
- Resolved: David Brock Smith

## Bound contracts (3)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| David Brock Smith | 80¢ | +3pp | $489 | kalshi | /markets/will-david-brock-smith-be-the-republican-nominee-f-kalshi-kxsenateorr-26-dsmi |
| Jo Rae Perkins | 21¢ | +1pp | $252 | kalshi | /markets/will-jo-rae-perkins-be-the-republican-nominee-for-kalshi-kxsenateorr-26-jper |
| Brent Barker | 3¢ | −1pp | $0 | kalshi | /markets/will-brent-barker-be-the-republican-nominee-for-th-kalshi-kxsenateorr-26-bbar |

## 30-day trajectory

| Day | Aggregate |
|---|---|
| 2026-04-27 | 44 |
| 2026-05-11 | 46 |
| 2026-05-18 | 49 |
| 2026-05-19 | 1 |

_18 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-05-18 · David Brock Smith +3pp 74→77¢ · kalshi

## Analysis

This probability indicates the likelihood that Brent Barker wins the Republican primary for Oregon's U.S. Senate seat. Currently at 32%, it reflects market expectations that Barker faces significant competition in what appears to be a multi-candidate field. David Brock Smith is the current frontrunner at 72%, with Jo Rae Perkins polling third at 22%, suggesting the Republican primary will be contested among at least three candidates. The probability would shift based on candidate momentum, endorsements, fundraising totals, and polling data as the primary election approaches. Oregon Republicans typically hold their primary in May, making the timing of campaign developments and voter engagement crucial to determining the eventual nominee. The outcome depends heavily on which candidate consolidates support among the party base and generates turnout in the primary election.

### Key factors

- David Brock Smith leads market expectations at 72%, indicating Barker is a distant second among likely Republican nominees
- Market volume on the Barker contract is minimal ($50 in 24h volume) compared to Smith ($502), suggesting limited trading activity and potentially less certainty in pricing
- Oregon's Republican primary election date and the remaining campaign timeline will affect candidate viability and voter consolidation patterns
- Barker's current 32% probability implies markets view him as a significant underdog despite competing in a three-way race
- Endorsements, fundraising reports, and any public polling data released before the primary could substantially shift this probability

## Methodology

Probability is **liquidity-weighted** across all bound Kalshi/Polymarket contracts: Σ(price × volume) ÷ Σ(volume). 30-day trajectory uses the daily mean of intraday 5-min captures. 24h delta = today's mean − yesterday's mean. Movement events are ≥3pp daily moves in the last 7 days.

## How to use this data

- HTML: https://simplefunctions.dev/odds/senateorr
- JSON: https://simplefunctions.dev/api/public/odds?slug=senateorr
- 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.