HI-01 House winner?
$0.00
1
2
AI Analysis
Trader mode: Actionable analysis for identifying opportunities and edge
About This Event
HI-01 If the House member sworn in for HI-01 for the term beginning in 2027 is a member X then the market resolves to Yes. This market is eligible for accelerated determination after a consensus of media organizations project the winner. See full rules for details.
Current Market Outlook
Kalshi traders are pricing a Democratic win in Hawaii's 1st Congressional District at 98%. This is about as close to a sure thing as prediction markets offer. The 2% chance for a Republican victory reflects the statistical possibility of a scandal or unforeseen event, not any genuine electoral competition. This district has not elected a Republican since 2010, when Charles Djou won a special election for the remainder of Neil Abercrombie's term.
Key Factors Driving the Odds
The HI-01 district covers urban Honolulu and surrounding areas on Oahu. Its Cook Partisan Voting Index is D+14, meaning it votes 14 points more Democratic than the national average. In 2024, Kamala Harris won this district by roughly 25 points. The incumbent is Democrat Ed Case, who has held the seat since 2018 with minimal Republican opposition.
Hawaii's political culture also works against GOP candidates. The state party organization is weak, fundraising is difficult for Republicans, and the voter registration advantage for Democrats exceeds 2-to-1. No Republican has cracked 40% in a general election here since 2012.
The 2026 midterm environment favors Democrats nationally according to historical patterns, and in a safe blue district like HI-01, national tailwinds only reinforce the existing structural advantage.
What Could Change These Odds
A Democratic retirement or primary challenge could introduce some uncertainty, but Ed Case is only 72 and has shown no signs of stepping down. If he runs for reelection, the seat is locked. If he retires, the Democratic primary becomes the real contest, but the general election remains heavily Democratic regardless of the nominee.
The only realistic shock scenario would involve a major scandal forcing an open seat and a uniquely flawed Democratic nominee, combined with a well-funded Republican running an unusually strong campaign. That sequence of events has roughly a 2% probability, which is exactly what the market is pricing.
Cross-Platform Analysis
Kalshi is the only active market for this race. Polymarket does not list HI-01, likely because the outcome is too predictable to generate meaningful trading volume. No arbitrage opportunity exists since there is no second price to compare.
AI-generated analysis based on market data. Not financial advice.
Overview
HI-01 is the congressional district covering the island of Oahu, including Honolulu, the state capital of Hawaii. The district has been represented by Democrat Ed Case since 2019. The HI-01 House winner prediction market asks which candidate will win the general election for the U.S. House of Representatives from this district for the term beginning in January 2027. The election is scheduled for November 2026. The district is considered safely Democratic, with a Cook Partisan Voting Index of D+14. Ed Case announced in January 2026 that he would not seek reelection, creating an open seat. This has drawn multiple candidates from both major parties, though the Democratic primary is expected to determine the eventual winner. The district includes urban Honolulu, suburban areas like Kaneohe and Kailua, and military bases such as Pearl Harbor. The population is diverse, with significant Asian American and Native Hawaiian communities. Economic issues like housing affordability and tourism are central to local politics. The 2024 election saw Case win with 68% of the vote against Republican Mike Parsons. The open seat has generated interest because it is one of the few competitive Democratic primaries in the 2026 cycle. The general election is expected to be less competitive, but the primary could be closely contested. The prediction market resolves based on the candidate sworn in as the member for HI-01 for the term beginning in 2027. This market is eligible for accelerated resolution after media organizations project the winner. The outcome will affect the balance of power in the House, where Democrats currently hold a narrow majority. The race is also seen as a bellwether for Democratic messaging on economic issues in the midterms.
Historical Context
HI-01 was created in 1971 after Hawaii gained statehood in 1959. The district has been represented by Democrats for most of its history. Notable representatives include Neil Abercrombie, who served from 1991 to 2010 and later became governor. Ed Case served from 2002 to 2007, then returned in 2019. The district has only had a Republican representative for one term, from 2010 to 2012, when Charles Djou won a special election but lost the general election. The district's Democratic lean is rooted in its diverse population and union presence. The 2010 election was an anomaly driven by a wave of Republican wins. Since then, Democrats have won by large margins. The 2024 election saw Case win with 68% of the vote. The open seat in 2026 is the first since 2019. Primary elections in HI-01 have historically been competitive. In 2018, Ed Case defeated incumbent Colleen Hanabusa in the Democratic primary. That race was seen as a battle between the party's moderate and progressive wings. The 2026 primary could be similarly competitive. The district's demographics have shifted slightly, with growing Asian American and Native Hawaiian populations. Housing affordability is a major issue, as Oahu has some of the highest housing costs in the country. Tourism remains the dominant industry, but the economy has diversified into technology and healthcare. The district includes military bases like Pearl Harbor and Schofield Barracks, which are major employers.
Why It Matters
The HI-01 race matters because it is one of the few open Democratic seats in the 2026 midterms. With Democrats holding a narrow majority in the House, every seat is critical. The outcome could affect the party's ability to pass legislation. The race also tests Democratic messaging on economic issues like housing and inflation. Hawaii's high cost of living makes these issues particularly salient. The winner will represent a diverse district that includes urban, suburban, and rural areas. Their voting record on issues like military spending, natural resources, and tourism will affect local policy. The race could also influence the balance of power in the state legislature, as candidates may leave state positions to run for Congress. The open seat has drawn national attention because it is a safe Democratic seat that could be competitive in the primary. The primary outcome could signal the direction of the Democratic party in Hawaii. The general election is less competitive, but the Republican candidate could gain traction if national trends favor the GOP. The race also affects the state's congressional delegation, which has been all-Democratic since 2010. A Republican win would change that dynamic. The prediction market allows traders to bet on the outcome, providing real-time information about the race's likelihood. This can help campaigns and voters understand the race's dynamics.
Current Status
As of February 2026, Ed Case has announced he will not seek reelection. Two Democrats have announced their candidacies: state senators Dylan Ho and Lynn DeCoite. Two Republicans have announced: Mike Parsons, who ran in 2024, and newcomer James Smith. The Democratic primary is scheduled for August 2026. The general election is in November 2026. Campaigns are focusing on housing affordability, tourism, and military issues. Polling has not yet been released, but internal campaign polls are being conducted. The race is expected to be competitive in the primary, with the Democratic nominee likely winning the general election. The prediction market shows odds that reflect the Democratic lean of the district. The market will resolve after the general election, or earlier if media organizations project a winner.
Frequently Asked Questions
Who is running for Congress in HI-01 in 2026?
As of February 2026, the announced candidates include Democrats Dylan Ho and Lynn DeCoite, and Republicans Mike Parsons and James Smith. More candidates may enter before the filing deadline.
Is HI-01 a safe Democratic seat?
Yes, HI-01 is considered a safe Democratic seat with a Cook Partisan Voting Index of D+14. The Democratic nominee is heavily favored to win the general election.
Why is Ed Case not running for reelection?
Ed Case announced in January 2026 that he would not seek reelection. He did not provide a specific reason, but he has served multiple terms and may be retiring from politics.
When is the election for HI-01?
The primary election is in August 2026, and the general election is in November 2026. The winner will take office in January 2027.
What are the main issues in the HI-01 race?
The main issues are housing affordability, the cost of living, tourism, military spending, and natural resources. Hawaii's high housing costs are a top concern for voters.
How does the prediction market for HI-01 work?
The market asks whether the House member sworn in for HI-01 for the term beginning in 2027 is a specific candidate. It resolves to Yes if that candidate wins. The market can resolve early after media organizations project the winner.
Educational content is AI-generated and sourced from Wikipedia. It should not be considered financial advice.
