The Prediction Markets

Republican Senate odds hit __ by October 31?

Closes
Nov 1, 2026, in 8 days
Traded
$128K
Venues
Polymarket
Prices updated
1 min ago
Share

What the markets expect

30% 81.5%

Next is 25% at 29%. Only Polymarket lists this market, so there is no second price to compare.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 1 min ago. Ages are as of when this page was built.

  • Polymarket
30%
81.5%
Polymarket 81.5%polled, 1 min agoBest Yes 85¢ on Polymarket, $100 pays $118 (1.18x)
Polymarket
Contract
30%
Last price
81.5%
As of
Polled 1 min ago
Buy Yes
85¢
Sell Yes
78¢
$100 on Yes pays
$118 (1.18x)
Volume
$30K
Trade this on Polymarket
25%
29%
Polymarket 29%polled, 1 min agoBest Yes 35.3¢ on Polymarket, $100 pays $283 (2.83x)
Polymarket
Contract
25%
Last price
29%
As of
Polled 1 min ago
Buy Yes
35.3¢
Sell Yes
22.7¢
$100 on Yes pays
$283 (2.83x)
Volume
$31K
Trade this on Polymarket
40%
5.9%
Polymarket 5.9%polled, 1 min agoBest Yes 6.5¢ on Polymarket, $100 pays $1,538 (15.4x)
Polymarket
Contract
40%
Last price
5.9%
As of
Polled 1 min ago
Buy Yes
6.5¢
Sell Yes
5.2¢
$100 on Yes pays
$1,538 (15.4x)
Volume
$18K
Trade this on Polymarket
45%
1.4%
Polymarket 1.4%polled, 1 min agoBest Yes 1.8¢ on Polymarket, $100 pays $5,556 (55.6x)
Polymarket
Contract
45%
Last price
1.4%
As of
Polled 1 min ago
Buy Yes
1.8¢
Sell Yes
1¢
$100 on Yes pays
$5,556 (55.6x)
Volume
$22K
Trade this on Polymarket
60%
1.4%
Polymarket 1.4%polled, 1 min agoBest Yes 1.9¢ on Polymarket, $100 pays $5,263 (52.6x)
Polymarket
Contract
60%
Last price
1.4%
As of
Polled 1 min ago
Buy Yes
1.9¢
Sell Yes
0.8¢
$100 on Yes pays
$5,263 (52.6x)
Volume
$1K
Trade this on Polymarket
50%
1.2%
Polymarket 1.2%polled, 1 min agoBest Yes 1.8¢ on Polymarket, $100 pays $5,556 (55.6x)
Polymarket
Contract
50%
Last price
1.2%
As of
Polled 1 min ago
Buy Yes
1.8¢
Sell Yes
0.6¢
$100 on Yes pays
$5,556 (55.6x)
Volume
$19K
Trade this on Polymarket
55%
1.2%
Polymarket 1.2%polled, 1 min agoBest Yes 1.9¢ on Polymarket, $100 pays $5,263 (52.6x)
Polymarket
Contract
55%
Last price
1.2%
As of
Polled 1 min ago
Buy Yes
1.9¢
Sell Yes
0.5¢
$100 on Yes pays
$5,263 (52.6x)
Volume
$2K
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: predictionmarketodds.com

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • 30%
  • 25%
  • 40%

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Top of book

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Depth · top 8 levels

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Republican Senate odds hit __ by October 31?". 30% leads at 81.5%. Next is 25% at 29%. $128K has traded across 7 outcomes on Polymarket. The market is expected to resolve by Nov 1, 2026.

This market will resolve to "Yes" if the Republican Party's hourly odds value in the "Senate Control 2026" listing on PredictionMarketOdds.com meets or exceeds the listed threshold for 4 consecutive hourly odds values, all published for a datapoint between market creation and November 1, 2026, 12:00 AM ET. Otherwise, this market will resolve to "No". An hourly odds value is the value in the "Odds of Happening" column that PredictionMarketOdds.com publishes for an option for a one-hour "Time Window (ET)", as shown on the listing page and in the "Odds History" graph. Hourly odds values are compared at the precision published by PredictionMarketOdds.com (one tenth of a percent). An hour in which the Republican Party's hourly odds value is below the listed threshold ends any run of consecutive hourly odds values. Hours for which PredictionMarketOdds.com publishes no hourly odds value for the Republican Party (shown as "NO_PRINT") will be disregarded and will neither count toward nor end a run of consecutive hourly odds values. If PredictionMarketOdds.com permanently ceases publishing hourly odds values for the Republican Party in the "Senate Control 2026" listing before November 1, 2026, 12:00 AM ET, including by removing the Republican Party from the listing, this market will resolve based on the hourly odds values published up to that point. If no hourly odds values have been published for the Republican Party between market creation and November 1, 2026, 12:00 AM ET, this market will resolve to "No". If the underlying market is officially decided before the listed end date, this market will resolve to "Yes" if the Republican Party is the outcome of the underlying market and otherwise to "No". If a published hourly odds value is clearly erroneous as a result of a technical or operational error, this market may remain open for up to an additional 48 hours after that value is first published to allow for a correction. A corrected value will be used in place of the original. If no correction is published within that period, the original value will stand, and revisions published after that period will not be considered. The resolution source for this market is PredictionMarketOdds.com, specifically the hourly odds values for the Republican Party in the "Senate Control 2026" listing at https://predictionmarketodds.com/senate-control-2026.html and on the Republican Party's detail page, reached by clicking the option's name in the listing. Prices shown on any individual prediction market will not be considered.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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