This market has closed
Trading ended on Dec 31, 2021. The prices below are the last ones before it closed and no longer update. Browse open markets
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.
- Polymarket
No outcome is trading right now. Check back when the venues reopen this market.
Who resolves this market
- Polymarket resolves via:

- UMA optimistic oracle, source: senate.gov
About this market
Final prediction market prices for "Will Kamala Harris cast 13 or more tie-breaking votes in 2021?". $157K has traded across 0 outcomes on Polymarket. The market closed on Dec 31, 2021.
This is a market on whether Kamala Harris will cast 13 or more tie-breaking votes in 2021. The market will resolve to “Yes” if Kamala Harris casts 13 or more tie-breaking votes in 2021, and “No” otherwise. Tie-breaking votes will be considered if they are cast on or before 11:59 PM ET, December 31, 2021. The resolution source will be https://www.senate.gov/legislative/TieVotes.htm. If the link changes or the becomes unavailable, another credible source will be chosen by the MIC to resolve this market. In the event of ambiguity, the market will be resolved at the sole discretion of the Markets Integrity Committee (MIC). Update: "Tie votes" has been updated to "Tie-breaking votes" to reflect the resolution source.
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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