How to get Kalshi election odds history

Kalshi lists a market for every US Senate, House and governor race, and for which party controls each chamber. Its API gives free candles and trades. Kalshi Eye adds every order book change and a minute-by-minute price for each: 984.6 million rows across 446 election series.

Checked against Kalshi's API and the files on November 2, 2026.

Where the markets are

Each race is a series with a market per side: -D pays if the Democrat wins, -R if the Republican does. Elections outside the US work the same way: KXISRAELPM, KXSPAINPARLI, KXCHICAGOMAYOR, KXTORONTOMAYOR.

From price to odds

A YES contract pays $1 if its side wins, so its price reads as the market's odds. At the end of November 1, 2026, SENATETX-26-D had a YES bid of 0.68 and an ask of 0.69: the market put Democrats' chance in Texas at about 68–69%. The mid, halfway between bid and ask, is the usual single number. The two sides of a race add up to a little more than 100% at the asks and a little less at the bids; the difference is the spread.

Daily odds for one race

bbo_1m has a row for every minute of every market, so a day's closing odds are its last minute:

SET TimeZone = 'UTC';

-- Each day's last minute: the YES mid for each side of the Texas Senate race.
SELECT date_trunc('day', minute::TIMESTAMPTZ) AS day,
       arg_max(mid_close, minute) FILTER (WHERE ticker = 'SENATETX-26-D') AS dem,
       arg_max(mid_close, minute) FILTER (WHERE ticker = 'SENATETX-26-R') AS rep
FROM read_parquet('kalshieye-data/bbo_1m/date=*/series=SENATETX/*.parquet')
GROUP BY day
ORDER BY day;

Minute by minute on election night

Polls start closing at 6 PM Eastern on November 3 (11 PM UTC), and most results come after midnight UTC, so election night is in the November 3 and November 4 files. Each day is published the next morning.

from kalshieye import Client  # pip install "kalshieye[pandas]"

kx = Client()  # reads KALSHIEYE_API_KEY
bars = kx.load("bbo_1m", "2026-11-03", "2026-11-04", series="CONTROLS")
odds = bars.pivot(index="minute", columns="ticker", values="mid_close")  # one column per party

Free hourly candles from Kalshi

For a quick look without downloading anything, Kalshi's candlesticks endpoint gives the hourly bid and ask for any market, without an API key. See How to get Kalshi historical data for the rest of the API.

import time
import requests

API = "https://external-api.kalshi.com/trade-api/v2"
now = int(time.time())
candles = requests.get(
    f"{API}/series/SENATETX/markets/SENATETX-26-D/candlesticks",
    params={"start_ts": now - 7 * 86400, "end_ts": now, "period_interval": 60},
    timeout=30,
).json()["candlesticks"]

for c in candles:
    print(c["end_period_ts"], c["yes_bid"]["close_dollars"], c["yes_ask"]["close_dollars"])

Every path is under https://external-api.kalshi.com/trade-api/v2.

Questions

Next

• Every Kalshi series: search by race or state.
• Kalshi order book data: how the book works and how to rebuild it.
• Kalshi vs Polymarket data: reading both venues' election markets.