# Will anyone win the Senate Republican primary election in the first round

> Lt. Governor Democratic primary leads at 56%, runner-up 43% across 5 winner-take-all outcomes — refreshed 2 min ago.

URL: https://simplefunctions.dev/odds/gaprimary1r
Updated: 2026-05-09T05:50:40.221Z
Category: politics · Topic: election-2026
Status: active
Closes: 2027-05-19

## Headline

- Leader: Lt. Governor Democratic primary at 56%
- Runner-up: Governor Democratic primary at 43%
- Outcomes: 5 (winner-take-all)
- Venue: Kalshi (5 contracts)
- 24h volume: $112

## Bound contracts (5)

| Outcome | Price | 24h | Volume | Venue | Slug |
|---|---|---|---|---|---|
| Lt. Governor Democratic primary | 56¢ | +14pp | $10 | kalshi | /markets/will-anyone-win-the-lieutenant-governor-democratic-kalshi-kxgaprimary1r-26may19-ltgovd |
| Governor Democratic primary | 43¢ | +9pp | $2 | kalshi | /markets/will-anyone-win-the-governor-democratic-primary-el-kalshi-kxgaprimary1r-26may19-govd |
| Senate Republican primary | 19¢ | −1pp | $0 | kalshi | /markets/will-anyone-win-the-senate-republican-primary-elec-kalshi-kxgaprimary1r-26may19-senr |
| Lt. Governor Republican primary | 5¢ | −1pp | $0 | kalshi | /markets/will-anyone-win-the-lieutenant-governor-republican-kalshi-kxgaprimary1r-26may19-ltgovr |
| Governor Republican primary | 3¢ | −2pp | $100 | kalshi | /markets/will-anyone-win-the-governor-republican-primary-el-kalshi-kxgaprimary1r-26may19-govr |

## 30-day trajectory

| Day | Lt. Governor Democratic primary | Governor Democratic primary | Senate Republican primary |
|---|---|---|---|
| 2026-04-25 | 28 | 26 | 71 |
| 2026-04-26 | 43 | 34 | 54 |
| 2026-04-27 | 42 | 34 | 40 |
| 2026-05-01 | — | 43 | 37 |
| 2026-05-08 | 56 | — | 20 |
| 2026-05-09 | — | — | 19 |

_9 days of price history captured. Each row is the daily mean of intraday 5-min captures._

## What moved the line

- 2026-05-08 · Lt. Governor Democratic primary +14pp 42→56¢ · kalshi
- 2026-05-07 · Senate Republican primary −10pp 29→19¢ · kalshi
- 2026-05-07 · Lt. Governor Republican primary −10pp 14→4¢ · kalshi
- 2026-05-06 · Senate Republican primary −8pp 37→29¢ · kalshi
- 2026-05-06 · Lt. Governor Republican primary −8pp 22→14¢ · kalshi

## Analysis

This probability reflects whether a Republican Senate primary candidate will secure their party's nomination on the first ballot or vote at the nominating convention, rather than requiring a subsequent round. The 56% estimate suggests markets view a first-round victory as slightly more likely than a contested outcome. The wide 33-percentage-point gap between trading venues indicates disagreement about nomination dynamics and delegate behavior. Key drivers include the strength and consolidation of frontrunner support, the number and viability of competing candidates, and rules governing delegate allocation across state parties. The outcome becomes clearer as state Republican parties hold their nominating conventions and primaries, with major decisions typically occurring through spring and early summer 2026.

### Key factors

- Republican Party rules for 2026 require specific delegate thresholds for first-ballot nomination success, which vary by state party apparatus rules
- Number of declared major candidates and their relative delegate counts as conventions approach will directly determine first-ballot viability
- State-by-state primary and convention calendar timing affects when sufficient delegates are allocated to enable or prevent first-round settlement
- Delegate pledge behavior and defection rates in actual voting versus pre-convention commitments determine whether frontrunner support holds
- Kalshi's higher probability (60%) versus Polymarket (27%) suggests material disagreement about whether nomination rules favor quick resolution

## 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/gaprimary1r
- JSON: https://simplefunctions.dev/api/public/odds?slug=gaprimary1r
- Topic hub: https://simplefunctions.dev/predictions/election-2026

## License

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