AZ-08 House winner? (2028): Republican party 91% ▲ 91AZ-09 House winner? (2028): Republican party 82% ▲ 82Big Bash League, Women: Sydney Sixers vs Syd… 9% ▼ 41Abu Dhabi T10 League: United Tigers vs Arabi… 9% ▼ 41Peak traffic through the Strait of Hormuz? (… 91% ▲ 38College Football Playoff Qualifiers: Ohio St. 14% ▼ 37ACC Men's U19 Asia Cup: India Under-19s vs P… 26% ▼ 24How much will Anthropic raise in its IPO: $7… 16% ▼ 23Will Pete Hegseth be impeached: Before Apr 1… 81% ▲ 23Brazilian Grand Prix: Driver Winner: Max Ver… 13% ▼ 23Test Match: Afghanistan vs Zimbabwe: Draw 84% ▲ 23NCAA Football: 2026 Heisman Award Winner: CJ… 32% ▲ 19ATP Paris Winner: Carlos Alcaraz 73% ▲ 19Next Israeli government # of seats: <58 71% ▲ 19Pete Hegseth impeached by...: March 31, 2027 77% ▲ 19Khamenei # posts November 3 - November 10, 2… 85% ▲ 18Heisman Trophy Winner: CJ Carr 34% ▲ 18Traffic through the Strait of Hormuz? (11/2 … 45% ▼ 18Jonathan Taylor Next Team: New York G 31% ▼ 18NCAA Football: 2026 Heisman Award Winner: Je… 21% ▼ 17Next leader out of power before 2027: Netany… 43% ▲ 17College Football Playoff Qualifiers: Texas 73% ▲ 17How much will Anthropic raise in its IPO: $6… 37% ▲ 17What will Trump say during 60 Minutes: Ukraine 69% ▼ 16AZ-08 House winner? (2028): Republican party 91% ▲ 91AZ-09 House winner? (2028): Republican party 82% ▲ 82Big Bash League, Women: Sydney Sixers vs Syd… 9% ▼ 41Abu Dhabi T10 League: United Tigers vs Arabi… 9% ▼ 41Peak traffic through the Strait of Hormuz? (… 91% ▲ 38College Football Playoff Qualifiers: Ohio St. 14% ▼ 37ACC Men's U19 Asia Cup: India Under-19s vs P… 26% ▼ 24How much will Anthropic raise in its IPO: $7… 16% ▼ 23Will Pete Hegseth be impeached: Before Apr 1… 81% ▲ 23Brazilian Grand Prix: Driver Winner: Max Ver… 13% ▼ 23Test Match: Afghanistan vs Zimbabwe: Draw 84% ▲ 23NCAA Football: 2026 Heisman Award Winner: CJ… 32% ▲ 19ATP Paris Winner: Carlos Alcaraz 73% ▲ 19Next Israeli government # of seats: <58 71% ▲ 19Pete Hegseth impeached by...: March 31, 2027 77% ▲ 19Khamenei # posts November 3 - November 10, 2… 85% ▲ 18Heisman Trophy Winner: CJ Carr 34% ▲ 18Traffic through the Strait of Hormuz? (11/2 … 45% ▼ 18Jonathan Taylor Next Team: New York G 31% ▼ 18NCAA Football: 2026 Heisman Award Winner: Je… 21% ▼ 17Next leader out of power before 2027: Netany… 43% ▲ 17College Football Playoff Qualifiers: Texas 73% ▲ 17How much will Anthropic raise in its IPO: $6… 37% ▲ 17What will Trump say during 60 Minutes: Ukraine 69% ▼ 16

2028 U.S. House winner Odds · In 2028

Kalshi traders give Democratic party a 80% chance (Polymarket: 78%).

Kalshi Volume $46.4K 24h $455 Ends Feb 1, 2029 Updated Nov 8, 7:00 AM EST
OutcomeChanceOdds24h Polymarket
Democratic party
80% -388 ▼ 1 78%
Republican party
20% +413 ▲ 2 24%

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Price history

0% 25% 50% 75% 100% Oct 6 Nov 7
Democratic partyRepublican party

On Polymarket

The same question also trades on Polymarket. Check the resolution rules before comparing prices: small wording differences change what pays out.

Which party will win the House in 2028?
Democratic Party78%
Republican Party24%
Polymarket $519 24h · $20.1K vol

Resolution rules

If the Democratic party has won control of the House in 2028, then the market resolves to Yes.

Source: Kalshi. The venue's rules are final.

FAQ

Who is favored in 2028 U.S. House winner?

As of Nov 8, 7:00 AM EST, traders on Kalshi price Democratic party at 80%, about -388 in American odds. On Polymarket the same outcome trades at 78%. Prices move with every trade.

How are prediction market odds calculated?

Each contract pays $1 if the outcome happens and $0 if it doesn't, so its price is the market's implied probability: a 60¢ contract means roughly a 60% chance. We show the last trade, or the midpoint between the best bid and ask when the order book is tight.

When does this market close?

Kalshi lists Feb 1, 2029 as the end date. It can close earlier if the outcome is decided.

Where can I trade on 2028 U.S. House winner?

This market trades on Kalshi and a matching market trades on Polymarket. Availability depends on where you live: Kalshi is a CFTC-regulated US exchange, while Polymarket's international site isn't available to US users (Polymarket US is a separate app). You must be 18 or older.