TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 23, 8:33 PM EST
Kalshi
This market tracks which candidate will secure the Republican Party nomination for Maryland's 1st congressional district House seat in 2026. On Kalshi, Andy Harris holds 94.0% probability of winning the nomination, while Chris Bruneau stands at 3.0%. The market resolves based on which candidate officially wins the Republican nomination as determined by party processes. Watch the Maryland Republican primary calendar and candidate filing deadlines leading up to the November 3, 2026 general election date.
If Andy Harris wins the nomination for the Republican Party to contest the 2026 MD-01 House seat, then the market resolves to Yes. If Chris Bruneau wins the nomination for the Republican Party to contest the 2026 MD-01 House seat, then the market resolves to Yes.
Prediction market odds on Kalshi often diverge from traditional polling because markets incorporate trader expectations, fundraising data, endorsements, and real-time campaign momentum. While polls capture voter sentiment at a single moment, prediction markets aggregate continuous information flow and financial incentives for accuracy. The MD-01 Republican nominee market reflects traders' beliefs about which candidate will ultimately secure the nomination, potentially leading the market to price in frontrunners more aggressively than polls suggest. Comparing the two reveals whether the market is more bullish or bearish on specific candidates relative to survey data.
The MD-01 Republican nominee market resolves on Nov 3, 2026. Resolution is determined by the official outcome of the Republican primary election or nomination process in Maryland's 1st Congressional District. The market will settle based on which candidate is officially designated as the Republican nominee for the general election. Traders should monitor primary election dates, party convention rules, and official certification of results to understand the exact resolution criteria and timing.
Key catalysts for price movement include candidate endorsements from national or state Republican leaders, campaign funding announcements and spending reports, debate performances, polling releases, primary election results from neighboring districts, candidate withdrawals or entries, media coverage of scandals or gaffes, and grassroots organizing developments. Local economic news affecting the district, shifts in national Republican priorities, and changes to the primary calendar can also influence trader sentiment. Major political events, such as shifts in party leadership or unexpected candidate momentum, may rapidly reprrice the market as traders reassess nomination probabilities.