The Prediction Markets

Maine Senate margin of victory

Closes
Nov 3, 2027, in 13 months
Traded
$396K
Venues
Polymarket, Kalshi
Prices updated
just now
Share

What the markets expect

Jackson, 1+ pts 59%

Next is Jackson, 3+ pts at 42%. 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 2 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Jackson, 1+ pts
59%
Kalshi 59%polled, 2 min agoBest Yes 59¢ on Kalshi, $100 pays $169 (1.69x)
Kalshi
Contract
Jackson, 1+ pts
Last price
59%
As of
Polled 2 min ago
Buy Yes
59¢
Sell Yes
58¢
$100 on Yes pays
$169 (1.69x)
Volume
$79K
Trade this on Kalshi
Jackson, 3+ pts
42%
Kalshi 42%polled, 2 min agoBest Yes 43¢ on Kalshi, $100 pays $233 (2.33x)
Kalshi
Contract
Jackson, 3+ pts
Last price
42%
As of
Polled 2 min ago
Buy Yes
43¢
Sell Yes
40¢
$100 on Yes pays
$233 (2.33x)
Volume
$96K
Trade this on Kalshi
Jackson, 2+ pts
41%
Kalshi 41%polled, 2 min agoBest Yes 53¢ on Kalshi, $100 pays $189 (1.89x)
Kalshi
Contract
Jackson, 2+ pts
Last price
41%
As of
Polled 2 min ago
Buy Yes
53¢
Sell Yes
41¢
$100 on Yes pays
$189 (1.89x)
Volume
$1
Trade this on Kalshi
Collins, 1+ pts
29%
Kalshi 29%polled, 40s 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
27%
Kalshi 27%polled, 2 min agoBest Yes 35¢ on Kalshi, $100 pays $286 (2.86x)
Kalshi
Contract
Jackson, 4+ pts
Last price
27%
As of
Polled 2 min ago
Buy Yes
35¢
Sell Yes
27¢
$100 on Yes pays
$286 (2.86x)
Volume
$1
Trade this on Kalshi
Collins, 2+ pts
26%
Kalshi 26%polled, 40s agoBest Yes 31¢ on Kalshi, $100 pays $323 (3.23x)
Kalshi
Contract
Collins, 2+ pts
Last price
26%
As of
Polled just now
Buy Yes
31¢
Sell Yes
21¢
$100 on Yes pays
$323 (3.23x)
Trade this on Kalshi
Collins, 3+ pts
25%
Kalshi 25%polled, 40s agoBest Yes 25¢ on Kalshi, $100 pays $400 (4.00x)
Kalshi
Contract
Collins, 3+ pts
Last price
25%
As of
Polled just now
Buy Yes
25¢
Sell Yes
22¢
$100 on Yes pays
$400 (4.00x)
Volume
$39K
Trade this on Kalshi
Collins 0-3%
22.5%
Polymarket 22.5%polled, 40s 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
$206
Trade this on Polymarket
Jackson, 5+ pts
22%
Kalshi 22%polled, 2 min agoBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Jackson, 5+ pts
Last price
22%
As of
Polled 2 min ago
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, 40s 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
Collins, 4+ pts
16%
Kalshi 16%polled, 40s agoBest Yes 21¢ on Kalshi, $100 pays $476 (4.76x)
Kalshi
Contract
Collins, 4+ pts
Last price
16%
As of
Polled just now
Buy Yes
21¢
Sell Yes
11¢
$100 on Yes pays
$476 (4.76x)
Trade this on Kalshi
Jackson, 6+ pts
16%
Kalshi 16%polled, 2 min agoBest Yes 24¢ on Kalshi, $100 pays $417 (4.17x)
Kalshi
Contract
Jackson, 6+ pts
Last price
16%
As of
Polled 2 min ago
Buy Yes
24¢
Sell Yes
16¢
$100 on Yes pays
$417 (4.17x)
Volume
$124
Trade this on Kalshi
Collins 3-6%
15.5%
Polymarket 15.5%polled, 40s 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
$89
Trade this on Polymarket
Collins 6-9%
15.5%
Polymarket 15.5%polled, 40s agoBest Yes 16¢ on Polymarket, $100 pays $625 (6.25x)
Polymarket
Contract
Collins 6-9%
Last price
15.5%
As of
Polled just now
Buy Yes
16¢
Sell Yes
15¢
$100 on Yes pays
$625 (6.25x)
Volume
$302
Trade this on Polymarket
Collins, 5+ pts
14%
Kalshi 14%polled, 40s agoBest Yes 14¢ on Kalshi, $100 pays $714 (7.14x)
Kalshi
Contract
Collins, 5+ pts
Last price
14%
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, 7+ pts
13%
Kalshi 13%polled, 2 min agoBest Yes 17¢ on Kalshi, $100 pays $588 (5.88x)
Kalshi
Contract
Jackson, 7+ pts
Last price
13%
As of
Polled 2 min ago
Buy Yes
17¢
Sell Yes
13¢
$100 on Yes pays
$588 (5.88x)
Volume
$24K
Trade this on Kalshi
Jackson 9-12%
12.5%
Polymarket 12.5%polled, 40s agoBest Yes 14¢ on Polymarket, $100 pays $714 (7.14x)
Polymarket
Contract
Jackson 9-12%
Last price
12.5%
As of
Polled just now
Buy Yes
14¢
Sell Yes
11¢
$100 on Yes pays
$714 (7.14x)
Volume
$932
Trade this on Polymarket
Collins, 6+ pts
10.1%
Kalshi 10.1%polled, 40s agoBest Yes 15¢ on Kalshi, $100 pays $667 (6.67x)
Kalshi
Contract
Collins, 6+ pts
Last price
10.1%
As of
Polled just now
Buy Yes
15¢
Sell Yes
5.2¢
$100 on Yes pays
$667 (6.67x)
Trade this on Kalshi
Collins, 7+ pts
9.6%
Kalshi 9.6%polled, 40s agoBest Yes 9.6¢ on Kalshi, $100 pays $1,042 (10.4x)
Kalshi
Contract
Collins, 7+ pts
Last price
9.6%
As of
Polled just now
Buy Yes
9.6¢
Sell Yes
5.1¢
$100 on Yes pays
$1,042 (10.4x)
Volume
$24K
Trade this on Kalshi
Jackson, 9+ pts
9.4%
Kalshi 9.4%polled, 2 min agoBest Yes 11¢ on Kalshi, $100 pays $909 (9.09x)
Kalshi
Contract
Jackson, 9+ pts
Last price
9.4%
As of
Polled 2 min ago
Buy Yes
11¢
Sell Yes
9.4¢
$100 on Yes pays
$909 (9.09x)
Volume
$14K
Trade this on Kalshi
Jackson 3-6%
9.3%
Polymarket 9.3%polled, 40s agoBest Yes 10.7¢ on Polymarket, $100 pays $935 (9.35x)
Polymarket
Contract
Jackson 3-6%
Last price
9.3%
As of
Polled just now
Buy Yes
10.7¢
Sell Yes
7.8¢
$100 on Yes pays
$935 (9.35x)
Volume
$135
Trade this on Polymarket
Jackson 0-3%
9%
Polymarket 9%polled, 40s agoBest Yes 10.3¢ on Polymarket, $100 pays $971 (9.71x)
Polymarket
Contract
Jackson 0-3%
Last price
9%
As of
Polled just now
Buy Yes
10.3¢
Sell Yes
7.7¢
$100 on Yes pays
$971 (9.71x)
Volume
$161
Trade this on Polymarket
Collins, 8+ pts
6.4%
Kalshi 6.4%polled, 40s agoBest Yes 6.8¢ on Kalshi, $100 pays $1,471 (14.7x)
Kalshi
Contract
Collins, 8+ pts
Last price
6.4%
As of
Polled just now
Buy Yes
6.8¢
Sell Yes
5.1¢
$100 on Yes pays
$1,471 (14.7x)
Volume
$3K
Trade this on Kalshi
Jackson, 8+ pts
6.1%
Kalshi 6.1%polled, 2 min agoBest Yes 16¢ on Kalshi, $100 pays $625 (6.25x)
Kalshi
Contract
Jackson, 8+ pts
Last price
6.1%
As of
Polled 2 min ago
Buy Yes
16¢
Sell Yes
5.9¢
$100 on Yes pays
$625 (6.25x)
Volume
$0
Trade this on Kalshi
Jackson, 11+ pts
5.1%
Kalshi 5.1%polled, 2 min agoBest Yes 7.8¢ on Kalshi, $100 pays $1,282 (12.8x)
Kalshi
Contract
Jackson, 11+ pts
Last price
5.1%
As of
Polled 2 min ago
Buy Yes
7.8¢
Sell Yes
5.1¢
$100 on Yes pays
$1,282 (12.8x)
Volume
$4K
Trade this on Kalshi
Jackson, 13+ pts
4.9%
Kalshi 4.9%polled, 2 min agoBest Yes 4.9¢ on Kalshi, $100 pays $2,041 (20.4x)
Kalshi
Contract
Jackson, 13+ pts
Last price
4.9%
As of
Polled 2 min ago
Buy Yes
4.9¢
Sell Yes
2.2¢
$100 on Yes pays
$2,041 (20.4x)
Volume
$5K
Trade this on Kalshi
Collins, 12+ pts
3.9%
Kalshi 3.9%polled, 40s 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
Jackson 12%+
3.4%
Polymarket 3.4%polled, 40s agoBest Yes 6.4¢ on Polymarket, $100 pays $1,563 (15.6x)
Polymarket
Contract
Jackson 12%+
Last price
3.4%
As of
Polled just now
Buy Yes
6.4¢
Sell Yes
0.3¢
$100 on Yes pays
$1,563 (15.6x)
Volume
$105
Trade this on Polymarket
Collins 9-12%
1.8%
Polymarket 1.8%polled, 40s agoBest Yes 3.3¢ on Polymarket, $100 pays $3,030 (30.3x)
Polymarket
Contract
Collins 9-12%
Last price
1.8%
As of
Polled just now
Buy Yes
3.3¢
Sell Yes
0.3¢
$100 on Yes pays
$3,030 (30.3x)
Volume
$121
Trade this on Polymarket
Collins 12%+
1.6%
Polymarket 1.6%polled, 40s agoBest Yes 2.9¢ on Polymarket, $100 pays $3,448 (34.5x)
Polymarket
Contract
Collins 12%+
Last price
1.6%
As of
Polled just now
Buy Yes
2.9¢
Sell Yes
0.3¢
$100 on Yes pays
$3,448 (34.5x)
Volume
$254
Trade this on Polymarket
Collins, 10+ pts
1.5%
Kalshi 1.5%polled, 40s 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, 3+ pts
  • Jackson, 2+ 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

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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 "Maine Senate margin of victory". Jackson, 1+ pts leads at 59%. Next is Jackson, 3+ pts at 42%. $396K 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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