Historical Polymarket Politics Data

Every Polymarket politics market since 2026-05-01, tick by tick, so you can see how the book moved on polls, debates, and results.

2026-05-01

all politics markets since

tick level

every order book update

2028

presidential race, every candidate

Endpoint

/v1/polymarket/{data_type}/{YYYY/MM/DD}/{market_slug}.parquet

Historical datasets

What Is Included in Polymarket Politics Data

The 2028 presidential race and nominations, the 2026 midterms, primaries, and government markets. Each market is one Parquet file per UTC day, found by market_slug.

2028 Presidential Election →

3 events · 384 markets

2026 Midterms →

1,276 events · 12,786 markets

L2 order book data

Every book snapshot and price change Polymarket sent, so you can rebuild bid and ask depth at any moment.

trades

Trade data

Every executed trade with price, size, and aggressor side, timestamped when it arrived.

onchain_fills

On-chain fills

Settled fills from Polygon with maker and taker wallets, for wallet-level flow and settlement checks.

What matters in politics markets

Election markets react to scheduled events: debates, primaries, filings, and results. Tick data shows how fast the book repriced.
Multi-candidate events are many separate markets. Join them on the event to see the whole field at one moment.
PMData has market activity only. Join polls and news from your own source on UTC timestamps.

Download Polymarket Politics Data

import pandas as pd

market_slug = "will-jd-vance-win-the-2028-us-presidential-election"
data_type = "l2"
date_path = "2026/08/08"

url = "https://api.pmdata.dev/v1/polymarket/"
url += f"{data_type}/{date_path}/{market_slug}.parquet"

df = pd.read_parquet(url, storage_options={"api_key": "<YOUR_API_KEY>", "User-Agent": "Mozilla/5.0"})
print(df.head())

Use cases

Event studies

Measure how price and depth moved around debates, polls, and results.

Candidate fields

Rebuild every candidate's book at the same moment to compare implied odds.

Liquidity research

Compare spread and depth across races and as election day nears.

Need another market category? Browse the complete Polymarket data archive.