The Prediction Markets

FL-21 House Election Margin of Victory

Closes
Nov 4, 2026, in 12 days
Traded
$15K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

Mast, 1+ pts 84%

Next is Mast, 4+ pts at 76%. The venues list this event, but none of their outcomes are matched yet, so prices are shown separately.

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. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Mast, 1+ pts
84%
Kalshi 84%polled, 30s agoBest Yes 89¢ on Kalshi, $100 pays $112 (1.12x)
Kalshi
Contract
Mast, 1+ pts
Last price
84%
As of
Polled just now
Buy Yes
89¢
Sell Yes
84¢
$100 on Yes pays
$112 (1.12x)
Volume
$870
Trade this on Kalshi
Mast, 4+ pts
76%
Kalshi 76%polled, 30s agoBest Yes 78¢ on Kalshi, $100 pays $128 (1.28x)
Kalshi
Contract
Mast, 4+ pts
Last price
76%
As of
Polled just now
Buy Yes
78¢
Sell Yes
75¢
$100 on Yes pays
$128 (1.28x)
Volume
$320
Trade this on Kalshi
Mast, 7+ pts
65%
Kalshi 65%polled, 30s agoBest Yes 68¢ on Kalshi, $100 pays $147 (1.47x)
Kalshi
Contract
Mast, 7+ pts
Last price
65%
As of
Polled just now
Buy Yes
68¢
Sell Yes
62¢
$100 on Yes pays
$147 (1.47x)
Trade this on Kalshi
Mast, 10+ pts
53.5%
Kalshi 53.5%polled, 30s agoBest Yes 59¢ on Kalshi, $100 pays $169 (1.69x)
Kalshi
Contract
Mast, 10+ pts
Last price
53.5%
As of
Polled just now
Buy Yes
59¢
Sell Yes
48¢
$100 on Yes pays
$169 (1.69x)
Trade this on Kalshi
Mast, 13+ pts
37%
Kalshi 37%polled, 30s agoBest Yes 44¢ on Kalshi, $100 pays $227 (2.27x)
Kalshi
Contract
Mast, 13+ pts
Last price
37%
As of
Polled just now
Buy Yes
44¢
Sell Yes
33¢
$100 on Yes pays
$227 (2.27x)
Volume
$560
Trade this on Kalshi
Mast, 16+ pts
31%
Kalshi 31%polled, 30s agoBest Yes 31¢ on Kalshi, $100 pays $323 (3.23x)
Kalshi
Contract
Mast, 16+ pts
Last price
31%
As of
Polled just now
Buy Yes
31¢
Sell Yes
20¢
$100 on Yes pays
$323 (3.23x)
Volume
$560
Trade this on Kalshi
Republican 5-10%
27.4%
Polymarket 27.4%polled, 30s agoBest Yes 28.2¢ on Polymarket, $100 pays $355 (3.55x)
Polymarket
Contract
Republican 5-10%
Last price
27.4%
As of
Polled just now
Buy Yes
28.2¢
Sell Yes
26.5¢
$100 on Yes pays
$355 (3.55x)
Volume
$646
Trade this on Polymarket
Republican 10-15%
23.5%
Polymarket 23.5%polled, 30s agoBest Yes 27¢ on Polymarket, $100 pays $370 (3.70x)
Polymarket
Contract
Republican 10-15%
Last price
23.5%
As of
Polled just now
Buy Yes
27¢
Sell Yes
20¢
$100 on Yes pays
$370 (3.70x)
Volume
$6K
Trade this on Polymarket
Republican 15-20%
16.5%
Polymarket 16.5%polled, 30s agoBest Yes 22¢ on Polymarket, $100 pays $455 (4.55x)
Polymarket
Contract
Republican 15-20%
Last price
16.5%
As of
Polled just now
Buy Yes
22¢
Sell Yes
11¢
$100 on Yes pays
$455 (4.55x)
Volume
$3K
Trade this on Polymarket
Mast, 19+ pts
14%
Kalshi 14%polled, 30s agoBest Yes 19¢ on Kalshi, $100 pays $526 (5.26x)
Kalshi
Contract
Mast, 19+ pts
Last price
14%
As of
Polled just now
Buy Yes
19¢
Sell Yes
8.9¢
$100 on Yes pays
$526 (5.26x)
Trade this on Kalshi
Show 7 more outcomes
Democrat Wins
13.3%
Polymarket 13.3%polled, 30s agoBest Yes 16.2¢ on Polymarket, $100 pays $617 (6.17x)
Polymarket
Contract
Democrat Wins
Last price
13.3%
As of
Polled just now
Buy Yes
16.2¢
Sell Yes
10.3¢
$100 on Yes pays
$617 (6.17x)
Volume
$902
Trade this on Polymarket
Mast, 25+ pts
9.2%
Kalshi 9.2%polled, 30s agoBest Yes 9.2¢ on Kalshi, $100 pays $1,087 (10.9x)
Kalshi
Contract
Mast, 25+ pts
Last price
9.2%
As of
Polled just now
Buy Yes
9.2¢
Sell Yes
—
$100 on Yes pays
$1,087 (10.9x)
Volume
$79
Trade this on Kalshi
Republican 20-25%
8.4%
Polymarket 8.4%polled, 30s agoBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Republican 20-25%
Last price
8.4%
As of
Polled just now
Buy Yes
16¢
Sell Yes
0.7¢
$100 on Yes pays
$625 (6.25x)
Volume
$287
Trade this on Polymarket
Mast, 22+ pts
6.8%
Kalshi 6.8%polled, 30s agoBest Yes 12¢ on Kalshi, $100 pays $833 (8.33x)
Kalshi
Contract
Mast, 22+ pts
Last price
6.8%
As of
Polled just now
Buy Yes
12¢
Sell Yes
1.5¢
$100 on Yes pays
$833 (8.33x)
Trade this on Kalshi
Republican 25-30%
5.1%
Polymarket 5.1%polled, 30s agoBest Yes 7¢ on Polymarket, $100 pays $1,429 (14.3x)
Polymarket
Contract
Republican 25-30%
Last price
5.1%
As of
Polled just now
Buy Yes
7¢
Sell Yes
3.1¢
$100 on Yes pays
$1,429 (14.3x)
Volume
$1K
Trade this on Polymarket
Republican 0-5%
3.8%
Polymarket 3.8%polled, 30s agoBest Yes 5.8¢ on Polymarket, $100 pays $1,724 (17.2x)
Polymarket
Contract
Republican 0-5%
Last price
3.8%
As of
Polled just now
Buy Yes
5.8¢
Sell Yes
1.8¢
$100 on Yes pays
$1,724 (17.2x)
Volume
$239
Trade this on Polymarket
Republican 30%+
2.9%
Polymarket 2.9%polled, 30s agoBest Yes 4.5¢ on Polymarket, $100 pays $2,222 (22.2x)
Polymarket
Contract
Republican 30%+
Last price
2.9%
As of
Polled just now
Buy Yes
4.5¢
Sell Yes
1.2¢
$100 on Yes pays
$2,222 (22.2x)
Volume
$295
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: official election authority responsible for certifying results in

How the odds have moved

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

  • Mast, 1+ pts
  • Mast, 4+ pts
  • Mast, 7+ pts

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.

Polymarket

Polymarket doesn’t list Mast, 1+ pts for this event.

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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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.

$
Buy

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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 "FL-21 House Election Margin of Victory". Mast, 1+ pts leads at 84%. Next is Mast, 4+ pts at 76%. $15K has traded across 17 outcomes on Polymarket and Kalshi. The market is expected to resolve by Nov 4, 2026.

The 2026 FL-21 House election is currently expected to be held on November 3, 2026. This market will resolve according to the margin of victory between the top two candidates in the specified election. The "margin of victory" is defined as the absolute difference between the percentages of valid votes received by the first-place and second-place candidates. Percentages of the valid votes received by each candidate will be determined by dividing the total number of valid votes each of the top two candidates receives by the sum of all valid votes cast in the election. For purposes of this market, candidates nominated by the Democratic & Republican Parties will represent the options for "Democrat" and "Republican," respectively. Independent candidates will not represent options for either party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party. If the reported value falls exactly between two brackets, then this market will resolve to the higher margin bracket. If two or more candidates tie for the most valid votes in this election, and the tie is between two candidates listed, this market will resolve to the lowest margin bracket for the candidate whose ballot-listed last name comes first in alphabetical order. If the tie is between a listed candidate and an unlisted candidate, this market will resolve to the lowest margin bracket for the listed candidate. If the tie is between two or more unlisted candidates, this market will resolve to "Other." If the listed candidate is represented in this market group as "Republican" or "Democrat" their ballot-listed last name will still be used for tiebreaking. This market will resolve based on the official vote count once the count has been made official. If the election results are not known definitively by June 30, 2027, 11:59 PM ET, this market will resolve to "Other". If a recount is initiated before the vote total has been made official, the market will remain open until the recount is completed and the vote is made official. The primary resolution source for this market will be the official results of the 2026 FL-21 House election as published by the state electoral authority responsible for certifying the results of the election; however, an overwhelming consensus of credible reporting may also be used.

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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