The Prediction Markets

Maine Senate: margin of victory

Closes
Nov 3, 2027, in 13 months
Traded
$417K
Venues
Polymarket, Kalshi
Prices updated
just now
Share

What the markets expect

Jackson, 1+ pts 58%

Next is Jackson, 2+ pts at 51%. 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 7 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Jackson, 1+ pts
58%
Kalshi 58%polled, just nowBest Yes 60¢ on Kalshi, $100 pays $167 (1.67x)
Kalshi
Contract
Jackson, 1+ pts
Last price
58%
As of
Polled just now
Buy Yes
60¢
Sell Yes
58¢
$100 on Yes pays
$167 (1.67x)
Volume
$80K
Trade this on Kalshi
Jackson, 2+ pts
51%
Kalshi 51%polled, just nowBest Yes 51¢ on Kalshi, $100 pays $196 (1.96x)
Kalshi
Contract
Jackson, 2+ pts
Last price
51%
As of
Polled just now
Buy Yes
51¢
Sell Yes
45¢
$100 on Yes pays
$196 (1.96x)
Volume
$442
Trade this on Kalshi
Jackson, 3+ pts
38%
Kalshi 38%polled, just nowBest Yes 41¢ on Kalshi, $100 pays $244 (2.44x)
Kalshi
Contract
Jackson, 3+ pts
Last price
38%
As of
Polled just now
Buy Yes
41¢
Sell Yes
38¢
$100 on Yes pays
$244 (2.44x)
Volume
$97K
Trade this on Kalshi
Jackson, 4+ pts
34%
Kalshi 34%polled, just nowBest Yes 36¢ on Kalshi, $100 pays $278 (2.78x)
Kalshi
Contract
Jackson, 4+ pts
Last price
34%
As of
Polled just now
Buy Yes
36¢
Sell Yes
34¢
$100 on Yes pays
$278 (2.78x)
Volume
$26
Trade this on Kalshi
Collins, 2+ pts
33.5%
Kalshi 33.5%polled, just nowBest Yes 34¢ on Kalshi, $100 pays $294 (2.94x)
Kalshi
Contract
Collins, 2+ pts
Last price
33.5%
As of
Polled just now
Buy Yes
34¢
Sell Yes
33¢
$100 on Yes pays
$294 (2.94x)
Trade this on Kalshi
Collins, 1+ pts
33%
Kalshi 33%polled, just nowBest Yes 34¢ on Kalshi, $100 pays $294 (2.94x)
Kalshi
Contract
Collins, 1+ pts
Last price
33%
As of
Polled just now
Buy Yes
34¢
Sell Yes
33¢
$100 on Yes pays
$294 (2.94x)
Volume
$23K
Trade this on Kalshi
Collins, 3+ pts
24%
Kalshi 24%polled, just nowBest Yes 28¢ on Kalshi, $100 pays $357 (3.57x)
Kalshi
Contract
Collins, 3+ pts
Last price
24%
As of
Polled just now
Buy Yes
28¢
Sell Yes
23¢
$100 on Yes pays
$357 (3.57x)
Volume
$39K
Trade this on Kalshi
Collins, 4+ pts
24%
Kalshi 24%polled, just nowBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Collins, 4+ pts
Last price
24%
As of
Polled just now
Buy Yes
24¢
Sell Yes
16¢
$100 on Yes pays
$417 (4.17x)
Volume
$292
Trade this on Kalshi
Jackson, 5+ pts
23%
Kalshi 23%polled, just nowBest Yes 23¢ on Kalshi, $100 pays $435 (4.35x)
Kalshi
Contract
Jackson, 5+ pts
Last price
23%
As of
Polled just now
Buy Yes
23¢
Sell Yes
21¢
$100 on Yes pays
$435 (4.35x)
Volume
$59K
Trade this on Kalshi
Jackson, 6+ pts
23%
Kalshi 23%polled, just nowBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Jackson, 6+ pts
Last price
23%
As of
Polled just now
Buy Yes
24¢
Sell Yes
23¢
$100 on Yes pays
$417 (4.17x)
Volume
$852
Trade this on Kalshi
Show 31 more outcomes
Jackson, 7+ pts
22%
Kalshi 22%polled, just nowBest Yes 22¢ on Kalshi, $100 pays $455 (4.55x)
Kalshi
Contract
Jackson, 7+ pts
Last price
22%
As of
Polled just now
Buy Yes
22¢
Sell Yes
20¢
$100 on Yes pays
$455 (4.55x)
Volume
$28K
Trade this on Kalshi
Jackson 6-9%
17%
Polymarket 17%polled, just nowBest Yes 18¢ on Polymarket, $100 pays $556 (5.56x)
Polymarket
Contract
Jackson 6-9%
Last price
17%
As of
Polled just now
Buy Yes
18¢
Sell Yes
16¢
$100 on Yes pays
$556 (5.56x)
Volume
$1K
Trade this on Polymarket
Troy Jackson, 0-2%
17%
Kalshi 17%polled, 7 min agoBest Yes 17¢ on Kalshi, $100 pays $588 (5.88x)
Kalshi
Contract
Troy Jackson, 0-2%
Last price
17%
As of
Polled 7 min ago
Buy Yes
17¢
Sell Yes
13¢
$100 on Yes pays
$588 (5.88x)
Volume
$278
Trade this on Kalshi
Jackson 3-6%
17%
Polymarket 17%polled, just nowBest Yes 17.4¢ on Polymarket, $100 pays $575 (5.75x)
Polymarket
Contract
Jackson 3-6%
Last price
17%
As of
Polled just now
Buy Yes
17.4¢
Sell Yes
16.5¢
$100 on Yes pays
$575 (5.75x)
Volume
$234
Trade this on Polymarket
Collins, 6+ pts
16%
Kalshi 16%polled, just nowBest Yes 17¢ on Kalshi, $100 pays $588 (5.88x)
Kalshi
Contract
Collins, 6+ pts
Last price
16%
As of
Polled just now
Buy Yes
17¢
Sell Yes
8.6¢
$100 on Yes pays
$588 (5.88x)
Volume
$11
Trade this on Kalshi
Susan Collins, 0-2%
16%
Kalshi 16%polled, 7 min agoBest Yes 16¢ on Kalshi, $100 pays $625 (6.25x)
Kalshi
Contract
Susan Collins, 0-2%
Last price
16%
As of
Polled 7 min ago
Buy Yes
16¢
Sell Yes
14¢
$100 on Yes pays
$625 (6.25x)
Volume
$590
Trade this on Kalshi
Collins 6-9%
15%
Polymarket 15%polled, just nowBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Collins 6-9%
Last price
15%
As of
Polled just now
Buy Yes
16¢
Sell Yes
14¢
$100 on Yes pays
$625 (6.25x)
Volume
$409
Trade this on Polymarket
Jackson 0-3%
15%
Polymarket 15%polled, just nowBest Yes 15.5¢ on Polymarket, $100 pays $645 (6.45x)
Polymarket
Contract
Jackson 0-3%
Last price
15%
As of
Polled just now
Buy Yes
15.5¢
Sell Yes
14.5¢
$100 on Yes pays
$645 (6.45x)
Volume
$592
Trade this on Polymarket
Collins 3-6%
14.5%
Polymarket 14.5%polled, just nowBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Collins 3-6%
Last price
14.5%
As of
Polled just now
Buy Yes
16¢
Sell Yes
13¢
$100 on Yes pays
$625 (6.25x)
Volume
$654
Trade this on Polymarket
Collins 0-3%
13%
Polymarket 13%polled, just nowBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
Collins 0-3%
Last price
13%
As of
Polled just now
Buy Yes
14¢
Sell Yes
12¢
$100 on Yes pays
$714 (7.14x)
Volume
$1K
Trade this on Polymarket
Jackson, 8+ pts
13%
Kalshi 13%polled, just nowBest Yes 18¢ on Kalshi, $100 pays $556 (5.56x)
Kalshi
Contract
Jackson, 8+ pts
Last price
13%
As of
Polled just now
Buy Yes
18¢
Sell Yes
13¢
$100 on Yes pays
$556 (5.56x)
Volume
$1
Trade this on Kalshi
Susan Collins, 2-4%
13%
Kalshi 13%polled, 7 min agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Susan Collins, 2-4%
Last price
13%
As of
Polled 7 min ago
Buy Yes
13¢
Sell Yes
12¢
$100 on Yes pays
$769 (7.69x)
Volume
$725
Trade this on Kalshi
Troy Jackson, 2-4%
13%
Kalshi 13%polled, 7 min agoBest Yes 16¢ on Kalshi, $100 pays $625 (6.25x)
Kalshi
Contract
Troy Jackson, 2-4%
Last price
13%
As of
Polled 7 min ago
Buy Yes
16¢
Sell Yes
10¢
$100 on Yes pays
$625 (6.25x)
Trade this on Kalshi
Collins, 5+ pts
11%
Kalshi 11%polled, just nowBest Yes 14¢ on Kalshi, $100 pays $714 (7.14x)
Kalshi
Contract
Collins, 5+ pts
Last price
11%
As of
Polled just now
Buy Yes
14¢
Sell Yes
11¢
$100 on Yes pays
$714 (7.14x)
Volume
$26K
Trade this on Kalshi
Jackson 9-12%
11%
Polymarket 11%polled, just nowBest Yes 12¢ on Polymarket, $100 pays $833 (8.33x)
Polymarket
Contract
Jackson 9-12%
Last price
11%
As of
Polled just now
Buy Yes
12¢
Sell Yes
10¢
$100 on Yes pays
$833 (8.33x)
Volume
$1K
Trade this on Polymarket
Troy Jackson, 4-6%
10%
Kalshi 10%polled, 7 min agoBest Yes 13¢ on Kalshi, $100 pays $769 (7.69x)
Kalshi
Contract
Troy Jackson, 4-6%
Last price
10%
As of
Polled 7 min ago
Buy Yes
13¢
Sell Yes
7¢
$100 on Yes pays
$769 (7.69x)
Trade this on Kalshi
Troy Jackson, 6-8%
9.5%
Kalshi 9.5%polled, 7 min agoBest Yes 10¢ on Kalshi, $100 pays $1,000 (10.0x)
Kalshi
Contract
Troy Jackson, 6-8%
Last price
9.5%
As of
Polled 7 min ago
Buy Yes
10¢
Sell Yes
9¢
$100 on Yes pays
$1,000 (10.0x)
Trade this on Kalshi
Collins, 7+ pts
9.4%
Kalshi 9.4%polled, just nowBest Yes 9.7¢ on Kalshi, $100 pays $1,031 (10.3x)
Kalshi
Contract
Collins, 7+ pts
Last price
9.4%
As of
Polled just now
Buy Yes
9.7¢
Sell Yes
7¢
$100 on Yes pays
$1,031 (10.3x)
Volume
$24K
Trade this on Kalshi
Susan Collins, 4-6%
9%
Kalshi 9%polled, 7 min agoBest Yes 9¢ on Kalshi, $100 pays $1,111 (11.1x)
Kalshi
Contract
Susan Collins, 4-6%
Last price
9%
As of
Polled 7 min ago
Buy Yes
9¢
Sell Yes
8¢
$100 on Yes pays
$1,111 (11.1x)
Volume
$522
Trade this on Kalshi
Jackson, 9+ pts
8.9%
Kalshi 8.9%polled, just nowBest Yes 10¢ on Kalshi, $100 pays $1,000 (10.0x)
Kalshi
Contract
Jackson, 9+ pts
Last price
8.9%
As of
Polled just now
Buy Yes
10¢
Sell Yes
8.9¢
$100 on Yes pays
$1,000 (10.0x)
Volume
$14K
Trade this on Kalshi
Collins, 8+ pts
6.8%
Kalshi 6.8%polled, just nowBest Yes 6.9¢ on Kalshi, $100 pays $1,449 (14.5x)
Kalshi
Contract
Collins, 8+ pts
Last price
6.8%
As of
Polled just now
Buy Yes
6.9¢
Sell Yes
3.1¢
$100 on Yes pays
$1,449 (14.5x)
Volume
$6K
Trade this on Kalshi
Troy Jackson, ≥8%
6%
Kalshi 6%polled, 7 min agoBest Yes 10¢ on Kalshi, $100 pays $1,000 (10.0x)
Kalshi
Contract
Troy Jackson, ≥8%
Last price
6%
As of
Polled 7 min ago
Buy Yes
10¢
Sell Yes
6¢
$100 on Yes pays
$1,000 (10.0x)
Volume
$3
Trade this on Kalshi
Jackson, 11+ pts
5.1%
Kalshi 5.1%polled, just nowBest Yes 7.8¢ on Kalshi, $100 pays $1,282 (12.8x)
Kalshi
Contract
Jackson, 11+ pts
Last price
5.1%
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
Susan Collins, ≥8%
5%
Kalshi 5%polled, 7 min agoBest Yes 5¢ on Kalshi, $100 pays $2,000 (20.0x)
Kalshi
Contract
Susan Collins, ≥8%
Last price
5%
As of
Polled 7 min ago
Buy Yes
5¢
Sell Yes
4¢
$100 on Yes pays
$2,000 (20.0x)
Volume
$941
Trade this on Kalshi
Susan Collins, 6-8%
5%
Kalshi 5%polled, 7 min agoBest Yes 6¢ on Kalshi, $100 pays $1,667 (16.7x)
Kalshi
Contract
Susan Collins, 6-8%
Last price
5%
As of
Polled 7 min ago
Buy Yes
6¢
Sell Yes
5¢
$100 on Yes pays
$1,667 (16.7x)
Volume
$938
Trade this on Kalshi
Collins, 10+ pts
4.9%
Kalshi 4.9%polled, just nowBest Yes 4.9¢ on Kalshi, $100 pays $2,041 (20.4x)
Kalshi
Contract
Collins, 10+ pts
Last price
4.9%
As of
Polled just now
Buy Yes
4.9¢
Sell Yes
1.5¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$616
Trade this on Kalshi
Jackson, 13+ pts
4.9%
Kalshi 4.9%polled, just nowBest 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
2.1¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$5K
Trade this on Kalshi
Collins, 12+ pts
3.9%
Kalshi 3.9%polled, just nowBest Yes 4.9¢ on Kalshi, $100 pays $2,041 (20.4x)
Kalshi
Contract
Collins, 12+ pts
Last price
3.9%
As of
Polled just now
Buy Yes
4.9¢
Sell Yes
1¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$824
Trade this on Kalshi
Collins 9-12%
2.4%
Polymarket 2.4%polled, just nowBest Yes 4.3¢ on Polymarket, $100 pays $2,326 (23.3x)
Polymarket
Contract
Collins 9-12%
Last price
2.4%
As of
Polled just now
Buy Yes
4.3¢
Sell Yes
0.5¢
$100 on Yes pays
$2,326 (23.3x)
Volume
$254
Trade this on Polymarket
Collins 12%+
1.1%
Polymarket 1.1%polled, just nowBest Yes 2¢ on Polymarket, $100 pays $5,000 (50.0x)
Polymarket
Contract
Collins 12%+
Last price
1.1%
As of
Polled just now
Buy Yes
2¢
Sell Yes
0.1¢
$100 on Yes pays
$5,000 (50.0x)
Volume
$351
Trade this on Polymarket
Jackson 12%+
0.5%
Polymarket 0.5%polled, just nowBest Yes 0.9¢ on Polymarket, $100 pays $11,111 (111x)
Polymarket
Contract
Jackson 12%+
Last price
0.5%
As of
Polled just now
Buy Yes
0.9¢
Sell Yes
0.1¢
$100 on Yes pays
$11,111 (111x)
Volume
$201
Trade this on Polymarket

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 51%. $417K has traded across 41 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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