The Prediction Markets

Pennsylvania's 7th District margin of victory

Closes
Nov 3, 2027, in 13 months
Traded
$23K
Venues
Polymarket, Kalshi
Prices updated
just now
Share

What the markets expect

Brooks, 1+ pts 78.5%

Next is Brooks, 3+ pts at 74%. 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, the oldest 6 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Brooks, 1+ pts
78.5%
Kalshi 78.5%polled, 53s agoBest Yes 84¢ on Kalshi, $100 pays $119 (1.19x)
Kalshi
Contract
Brooks, 1+ pts
Last price
78.5%
As of
Polled just now
Buy Yes
84¢
Sell Yes
73¢
$100 on Yes pays
$119 (1.19x)
Trade this on Kalshi
Brooks, 3+ pts
74%
Kalshi 74%polled, 53s agoBest Yes 74¢ on Kalshi, $100 pays $135 (1.35x)
Kalshi
Contract
Brooks, 3+ pts
Last price
74%
As of
Polled just now
Buy Yes
74¢
Sell Yes
65¢
$100 on Yes pays
$135 (1.35x)
Volume
$77
Trade this on Kalshi
Brooks, 6+ pts
50%
Kalshi 50%polled, 53s agoBest Yes 60¢ on Kalshi, $100 pays $167 (1.67x)
Kalshi
Contract
Brooks, 6+ pts
Last price
50%
As of
Polled just now
Buy Yes
60¢
Sell Yes
50¢
$100 on Yes pays
$167 (1.67x)
Volume
$728
Trade this on Kalshi
Democrat 3-6%
38.5%
Polymarket 38.5%polled, 53s agoBest Yes 45¢ on Polymarket, $100 pays $222 (2.22x)
Polymarket
Contract
Democrat 3-6%
Last price
38.5%
As of
Polled just now
Buy Yes
45¢
Sell Yes
32¢
$100 on Yes pays
$222 (2.22x)
Volume
$3K
Trade this on Polymarket
Brooks, 9+ pts
35%
Kalshi 35%polled, 53s agoBest Yes 45¢ on Kalshi, $100 pays $222 (2.22x)
Kalshi
Contract
Brooks, 9+ pts
Last price
35%
As of
Polled just now
Buy Yes
45¢
Sell Yes
34¢
$100 on Yes pays
$222 (2.22x)
Volume
$528
Trade this on Kalshi
Brooks, 12+ pts
28%
Kalshi 28%polled, 53s agoBest Yes 32¢ on Kalshi, $100 pays $313 (3.13x)
Kalshi
Contract
Brooks, 12+ pts
Last price
28%
As of
Polled just now
Buy Yes
32¢
Sell Yes
21¢
$100 on Yes pays
$313 (3.13x)
Volume
$1K
Trade this on Kalshi
Brooks, 15+ pts
18%
Kalshi 18%polled, 53s agoBest Yes 20¢ on Kalshi, $100 pays $500 (5.00x)
Kalshi
Contract
Brooks, 15+ pts
Last price
18%
As of
Polled just now
Buy Yes
20¢
Sell Yes
11¢
$100 on Yes pays
$500 (5.00x)
Volume
$454
Trade this on Kalshi
Democrat 15-18%
15.5%
Polymarket 15.5%polled, 53s agoBest Yes 21.8¢ on Polymarket, $100 pays $459 (4.59x)
Polymarket
Contract
Democrat 15-18%
Last price
15.5%
As of
Polled just now
Buy Yes
21.8¢
Sell Yes
9.1¢
$100 on Yes pays
$459 (4.59x)
Volume
$1K
Trade this on Polymarket
Democrat 6-9%
14.8%
Polymarket 14.8%polled, 53s agoBest Yes 19.5¢ on Polymarket, $100 pays $513 (5.13x)
Polymarket
Contract
Democrat 6-9%
Last price
14.8%
As of
Polled just now
Buy Yes
19.5¢
Sell Yes
10¢
$100 on Yes pays
$513 (5.13x)
Volume
$3K
Trade this on Polymarket
Mackenzie, 3+ pts
13%
Kalshi 13%polled, 6 min agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Mackenzie, 3+ pts
Last price
13%
As of
Polled 6 min ago
Buy Yes
13¢
Sell Yes
3.4¢
$100 on Yes pays
$769 (7.69x)
Volume
$1K
Trade this on Kalshi
Show 10 more outcomes
Democrat 0-3%
12%
Polymarket 12%polled, 53s agoBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
Democrat 0-3%
Last price
12%
As of
Polled just now
Buy Yes
14¢
Sell Yes
10¢
$100 on Yes pays
$714 (7.14x)
Volume
$4K
Trade this on Polymarket
Democrat 0-3%
11%
Polymarket 11%polled, 53s agoBest Yes 13¢ on Polymarket, $100 pays $769 (7.69x)
Polymarket
Contract
Republican 0-3%
Last price
11%
As of
Polled just now
Buy Yes
13¢
Sell Yes
9¢
$100 on Yes pays
$769 (7.69x)
Volume
$1K
Trade this on Polymarket
Democrat 9-12%
10.1%
Polymarket 10.1%polled, 53s agoBest Yes 13.8¢ on Polymarket, $100 pays $725 (7.25x)
Polymarket
Contract
Democrat 9-12%
Last price
10.1%
As of
Polled just now
Buy Yes
13.8¢
Sell Yes
6.3¢
$100 on Yes pays
$725 (7.25x)
Volume
$1K
Trade this on Polymarket
Mackenzie, 9+ pts
7.9%
Kalshi 7.9%polled, 6 min agoBest Yes 7.9¢ on Kalshi, $100 pays $1,266 (12.7x)
Kalshi
Contract
Mackenzie, 9+ pts
Last price
7.9%
As of
Polled 6 min ago
Buy Yes
7.9¢
Sell Yes
—
$100 on Yes pays
$1,266 (12.7x)
Volume
$333
Trade this on Kalshi
Brooks, 18+ pts
7.6%
Kalshi 7.6%polled, 53s agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Brooks, 18+ pts
Last price
7.6%
As of
Polled just now
Buy Yes
13¢
Sell Yes
2.2¢
$100 on Yes pays
$769 (7.69x)
Trade this on Kalshi
Mackenzie, 6+ pts
4.4%
Kalshi 4.4%polled, 6 min agoBest Yes 9.8¢ on Kalshi, $100 pays $1,020 (10.2x)
Kalshi
Contract
Mackenzie, 6+ pts
Last price
4.4%
As of
Polled 6 min ago
Buy Yes
9.8¢
Sell Yes
4.4¢
$100 on Yes pays
$1,020 (10.2x)
Volume
$992
Trade this on Kalshi
Democrat 3-6%
4.2%
Polymarket 4.2%polled, 53s agoBest Yes 4.4¢ on Polymarket, $100 pays $2,273 (22.7x)
Polymarket
Contract
Republican 3-6%
Last price
4.2%
As of
Polled just now
Buy Yes
4.4¢
Sell Yes
4¢
$100 on Yes pays
$2,273 (22.7x)
Volume
$1K
Trade this on Polymarket
Democrat 12-15%
3.8%
Polymarket 3.8%polled, 53s agoBest Yes 6.9¢ on Polymarket, $100 pays $1,449 (14.5x)
Polymarket
Contract
Democrat 12-15%
Last price
3.8%
As of
Polled just now
Buy Yes
6.9¢
Sell Yes
0.7¢
$100 on Yes pays
$1,449 (14.5x)
Volume
$1K
Trade this on Polymarket
Democrat 18%+
3.8%
Polymarket 3.8%polled, 53s agoBest Yes 4.4¢ on Polymarket, $100 pays $2,273 (22.7x)
Polymarket
Contract
Democrat 18%+
Last price
3.8%
As of
Polled just now
Buy Yes
4.4¢
Sell Yes
3.1¢
$100 on Yes pays
$2,273 (22.7x)
Volume
$1K
Trade this on Polymarket
Republican 6%+
2.6%
Polymarket 2.6%polled, 53s agoBest Yes 4.9¢ on Polymarket, $100 pays $2,041 (20.4x)
Polymarket
Contract
Republican 6%+
Last price
2.6%
As of
Polled just now
Buy Yes
4.9¢
Sell Yes
0.3¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$1K
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.

  • Brooks, 1+ pts
  • Brooks, 3+ pts
  • Brooks, 6+ 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 Brooks, 1+ pts for this event.

Kalshi

Open on Kalshi ↗

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 0.05 × price × (1 − price) per share (other / general rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Pennsylvania's 7th District margin of victory". Brooks, 1+ pts leads at 78.5%. Next is Brooks, 3+ pts at 74%. $23K has traded across 20 outcomes on Polymarket and Kalshi. The market is expected to resolve by Nov 3, 2027.

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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