The Prediction Markets

Maine Senate margin of victory

Closes
Nov 3, 2027, in 13 months
Traded
$395K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

Jackson, 1+ pts 58%

Next is Jackson, 2+ pts at 43%. 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
Jackson, 1+ pts
58%
Kalshi 58%polled, 32s agoBest Yes 58¢ on Kalshi, $100 pays $172 (1.72x)
Kalshi
Contract
Jackson, 1+ pts
Last price
58%
As of
Polled just now
Buy Yes
58¢
Sell Yes
57¢
$100 on Yes pays
$172 (1.72x)
Volume
$79K
Trade this on Kalshi
Jackson, 2+ pts
43%
Kalshi 43%polled, 32s agoBest Yes 53¢ on Kalshi, $100 pays $189 (1.89x)
Kalshi
Contract
Jackson, 2+ pts
Last price
43%
As of
Polled just now
Buy Yes
53¢
Sell Yes
43¢
$100 on Yes pays
$189 (1.89x)
Trade this on Kalshi
Jackson, 3+ pts
42%
Kalshi 42%polled, 32s agoBest Yes 43¢ on Kalshi, $100 pays $233 (2.33x)
Kalshi
Contract
Jackson, 3+ pts
Last price
42%
As of
Polled just now
Buy Yes
43¢
Sell Yes
42¢
$100 on Yes pays
$233 (2.33x)
Volume
$96K
Trade this on Kalshi
Collins, 1+ pts
29%
Kalshi 29%polled, 32s agoBest Yes 32¢ on Kalshi, $100 pays $313 (3.13x)
Kalshi
Contract
Collins, 1+ pts
Last price
29%
As of
Polled just now
Buy Yes
32¢
Sell Yes
29¢
$100 on Yes pays
$313 (3.13x)
Volume
$23K
Trade this on Kalshi
Jackson, 4+ pts
28%
Kalshi 28%polled, 32s agoBest Yes 38¢ on Kalshi, $100 pays $263 (2.63x)
Kalshi
Contract
Jackson, 4+ pts
Last price
28%
As of
Polled just now
Buy Yes
38¢
Sell Yes
28¢
$100 on Yes pays
$263 (2.63x)
Trade this on Kalshi
Collins, 2+ pts
24%
Kalshi 24%polled, 32s agoBest Yes 30¢ on Kalshi, $100 pays $333 (3.33x)
Kalshi
Contract
Collins, 2+ pts
Last price
24%
As of
Polled just now
Buy Yes
30¢
Sell Yes
18¢
$100 on Yes pays
$333 (3.33x)
Trade this on Kalshi
Collins, 3+ pts
24%
Kalshi 24%polled, 32s agoBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Collins, 3+ pts
Last price
24%
As of
Polled just now
Buy Yes
24¢
Sell Yes
21¢
$100 on Yes pays
$417 (4.17x)
Volume
$39K
Trade this on Kalshi
Collins 0-3%
22.5%
Polymarket 22.5%polled, 32s agoBest Yes 23¢ on Polymarket, $100 pays $435 (4.35x)
Polymarket
Contract
Collins 0-3%
Last price
22.5%
As of
Polled just now
Buy Yes
23¢
Sell Yes
22¢
$100 on Yes pays
$435 (4.35x)
Volume
$161
Trade this on Polymarket
Jackson, 5+ pts
22%
Kalshi 22%polled, 32s agoBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Jackson, 5+ pts
Last price
22%
As of
Polled just now
Buy Yes
24¢
Sell Yes
22¢
$100 on Yes pays
$417 (4.17x)
Volume
$56K
Trade this on Kalshi
Jackson 6-9%
19%
Polymarket 19%polled, 32s agoBest Yes 20¢ on Polymarket, $100 pays $500 (5.00x)
Polymarket
Contract
Jackson 6-9%
Last price
19%
As of
Polled just now
Buy Yes
20¢
Sell Yes
18¢
$100 on Yes pays
$500 (5.00x)
Volume
$1K
Trade this on Polymarket
Show 21 more outcomes
Jackson, 6+ pts
17%
Kalshi 17%polled, 32s agoBest Yes 25¢ on Kalshi, $100 pays $400 (4.00x)
Kalshi
Contract
Jackson, 6+ pts
Last price
17%
As of
Polled just now
Buy Yes
25¢
Sell Yes
17¢
$100 on Yes pays
$400 (4.00x)
Trade this on Kalshi
Collins 3-6%
15.5%
Polymarket 15.5%polled, 32s agoBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Collins 3-6%
Last price
15.5%
As of
Polled just now
Buy Yes
16¢
Sell Yes
15¢
$100 on Yes pays
$625 (6.25x)
Volume
$50
Trade this on Polymarket
Collins 6-9%
15.5%
Polymarket 15.5%polled, 32s agoBest Yes 17¢ on Polymarket, $100 pays $588 (5.88x)
Polymarket
Contract
Collins 6-9%
Last price
15.5%
As of
Polled just now
Buy Yes
17¢
Sell Yes
14¢
$100 on Yes pays
$588 (5.88x)
Volume
$262
Trade this on Polymarket
Jackson 9-12%
14.5%
Polymarket 14.5%polled, 32s agoBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Jackson 9-12%
Last price
14.5%
As of
Polled just now
Buy Yes
16¢
Sell Yes
13¢
$100 on Yes pays
$625 (6.25x)
Volume
$893
Trade this on Polymarket
Collins, 4+ pts
13.6%
Kalshi 13.6%polled, 32s agoBest Yes 19¢ on Kalshi, $100 pays $526 (5.26x)
Kalshi
Contract
Collins, 4+ pts
Last price
13.6%
As of
Polled just now
Buy Yes
19¢
Sell Yes
8.1¢
$100 on Yes pays
$526 (5.26x)
Trade this on Kalshi
Collins, 5+ pts
13%
Kalshi 13%polled, 32s agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Collins, 5+ pts
Last price
13%
As of
Polled just now
Buy Yes
13¢
Sell Yes
10¢
$100 on Yes pays
$769 (7.69x)
Volume
$26K
Trade this on Kalshi
Jackson, 7+ pts
13%
Kalshi 13%polled, 32s agoBest Yes 17¢ on Kalshi, $100 pays $588 (5.88x)
Kalshi
Contract
Jackson, 7+ pts
Last price
13%
As of
Polled just now
Buy Yes
17¢
Sell Yes
13¢
$100 on Yes pays
$588 (5.88x)
Volume
$24K
Trade this on Kalshi
Jackson 3-6%
12.9%
Polymarket 12.9%polled, 32s agoBest Yes 19.7¢ on Polymarket, $100 pays $508 (5.08x)
Polymarket
Contract
Jackson 3-6%
Last price
12.9%
As of
Polled just now
Buy Yes
19.7¢
Sell Yes
6.1¢
$100 on Yes pays
$508 (5.08x)
Volume
$85
Trade this on Polymarket
Jackson 0-3%
12.3%
Polymarket 12.3%polled, 32s agoBest Yes 18¢ on Polymarket, $100 pays $556 (5.56x)
Polymarket
Contract
Jackson 0-3%
Last price
12.3%
As of
Polled just now
Buy Yes
18¢
Sell Yes
6.5¢
$100 on Yes pays
$556 (5.56x)
Volume
$122
Trade this on Polymarket
Collins, 7+ pts
9.5%
Kalshi 9.5%polled, 32s agoBest Yes 9.5¢ on Kalshi, $100 pays $1,053 (10.5x)
Kalshi
Contract
Collins, 7+ pts
Last price
9.5%
As of
Polled just now
Buy Yes
9.5¢
Sell Yes
5.1¢
$100 on Yes pays
$1,053 (10.5x)
Volume
$24K
Trade this on Kalshi
Jackson, 9+ pts
9%
Kalshi 9%polled, 32s agoBest Yes 10¢ on Kalshi, $100 pays $1,000 (10.0x)
Kalshi
Contract
Jackson, 9+ pts
Last price
9%
As of
Polled just now
Buy Yes
10¢
Sell Yes
9¢
$100 on Yes pays
$1,000 (10.0x)
Volume
$14K
Trade this on Kalshi
Jackson, 11+ pts
7.8%
Kalshi 7.8%polled, 32s agoBest Yes 7.8¢ on Kalshi, $100 pays $1,282 (12.8x)
Kalshi
Contract
Jackson, 11+ pts
Last price
7.8%
As of
Polled just now
Buy Yes
7.8¢
Sell Yes
5.1¢
$100 on Yes pays
$1,282 (12.8x)
Volume
$4K
Trade this on Kalshi
Collins, 6+ pts
6.6%
Kalshi 6.6%polled, 32s agoBest Yes 12¢ on Kalshi, $100 pays $833 (8.33x)
Kalshi
Contract
Collins, 6+ pts
Last price
6.6%
As of
Polled just now
Buy Yes
12¢
Sell Yes
1.1¢
$100 on Yes pays
$833 (8.33x)
Trade this on Kalshi
Collins, 8+ pts
6.4%
Kalshi 6.4%polled, 32s agoBest Yes 6.7¢ on Kalshi, $100 pays $1,493 (14.9x)
Kalshi
Contract
Collins, 8+ pts
Last price
6.4%
As of
Polled just now
Buy Yes
6.7¢
Sell Yes
5.1¢
$100 on Yes pays
$1,493 (14.9x)
Volume
$3K
Trade this on Kalshi
Jackson, 8+ pts
6.1%
Kalshi 6.1%polled, 32s agoBest Yes 16¢ on Kalshi, $100 pays $625 (6.25x)
Kalshi
Contract
Jackson, 8+ pts
Last price
6.1%
As of
Polled just now
Buy Yes
16¢
Sell Yes
5.9¢
$100 on Yes pays
$625 (6.25x)
Trade this on Kalshi
Jackson, 13+ pts
4.9%
Kalshi 4.9%polled, 32s agoBest Yes 4.9¢ on Kalshi, $100 pays $2,041 (20.4x)
Kalshi
Contract
Jackson, 13+ pts
Last price
4.9%
As of
Polled just now
Buy Yes
4.9¢
Sell Yes
2.2¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$5K
Trade this on Kalshi
Collins 9-12%
4%
Polymarket 4%polled, 32s agoBest Yes 6¢ on Polymarket, $100 pays $1,667 (16.7x)
Polymarket
Contract
Collins 9-12%
Last price
4%
As of
Polled just now
Buy Yes
6¢
Sell Yes
2¢
$100 on Yes pays
$1,667 (16.7x)
Volume
$71
Trade this on Polymarket
Collins, 12+ pts
3.9%
Kalshi 3.9%polled, 32s agoBest Yes 4¢ on Kalshi, $100 pays $2,500 (25.0x)
Kalshi
Contract
Collins, 12+ pts
Last price
3.9%
As of
Polled just now
Buy Yes
4¢
Sell Yes
1¢
$100 on Yes pays
$2,500 (25.0x)
Volume
$824
Trade this on Kalshi
Collins 12%+
3.4%
Polymarket 3.4%polled, 32s agoBest Yes 6.3¢ on Polymarket, $100 pays $1,587 (15.9x)
Polymarket
Contract
Collins 12%+
Last price
3.4%
As of
Polled just now
Buy Yes
6.3¢
Sell Yes
0.5¢
$100 on Yes pays
$1,587 (15.9x)
Volume
$215
Trade this on Polymarket
Jackson 12%+
3.3%
Polymarket 3.3%polled, 32s agoBest Yes 5.5¢ on Polymarket, $100 pays $1,818 (18.2x)
Polymarket
Contract
Jackson 12%+
Last price
3.3%
As of
Polled just now
Buy Yes
5.5¢
Sell Yes
1¢
$100 on Yes pays
$1,818 (18.2x)
Volume
$45
Trade this on Polymarket
Collins, 10+ pts
1.5%
Kalshi 1.5%polled, 32s agoBest Yes 4.9¢ on Kalshi, $100 pays $2,041 (20.4x)
Kalshi
Contract
Collins, 10+ pts
Last price
1.5%
As of
Polled just now
Buy Yes
4.9¢
Sell Yes
1.5¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$233
Trade this on Kalshi

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: Maine Department of the Secretary of State

How the odds have moved

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

  • Jackson, 1+ pts
  • Jackson, 2+ pts
  • Jackson, 3+ 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 Jackson, 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

Loading both order books…

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 "Maine Senate margin of victory". Jackson, 1+ pts leads at 58%. Next is Jackson, 2+ pts at 43%. $395K has traded across 31 outcomes on Kalshi and Polymarket. 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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