Which party will win the Senate in 2026?
A standalone Polymarket politics event with 9 markets and $3.9M in lifetime traded volume. 2 markets are trading. Marketlens records every market's order book at full depth, coverage running since August 15, 2026.
Data as of 2026-08-16
Top 2 markets by volume
Will the Democratic Party control the Senate after the 2026 Midterm elections?
closes 2026-11-03 · volume $2.3M · last price 52.5%
Will the Republican Party control the Senate after the 2026 Midterm elections?
closes 2026-11-03 · volume $1.6M · last price 47.5%
Query this event
from marketlens import MarketLens
client = MarketLens()
[event] = client.events.list(q="Which party will win the Senate in 2026", take=1)
for market in client.events.markets(event.id, take=5):
print(market.question, market.outcomes[0].last_price)
# the order book behind any market, at any past moment
book = client.orderbook.get(market.id, at="2026-08-16T12:00:00Z")
print(book.midpoint, book.bid_depth, book.ask_depth)Common questions
What data does Marketlens have for "Which party will win the Senate in 2026"?
9 markets with full depth L2 order book history recorded since August 15, 2026, market metadata with lifetime traded volume, and the winning outcome for each market once it resolves.
How much has "Which party will win the Senate in 2026" traded on Polymarket?
$3.9M in cumulative traded volume across the event's markets. Per market volumes are listed in the table on this page.
How do I download "Which party will win the Senate in 2026" data?
Query it through the REST API or the Python SDK (pip install marketlens): search events for "Which party will win the Senate in 2026", list the event's markets, then pull each market's order book history. Bulk Parquet exports cover full markets for offline work, and the free tier includes 5M rows per day.
Related events: Democratic Presidential Nominee 2028, Republican Presidential Nominee 2028, Presidential Election Winner 2028, or the full event list.
Try it
Pull this event's books in one call
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$ pip install marketlens