Democrat Janelle Stelson holds a strong position in Pennsylvania’s 10th congressional district heading into the November 2026 general election, with prediction markets assigning her party roughly 78% implied probability of victory. The rematch against incumbent Republican Scott Perry follows his narrow 2024 win by about 1.3 percentage points in this competitive south-central Pennsylvania seat. Stelson secured the Democratic nomination decisively in the May primary, benefits from substantial fundraising and endorsements including from Governor Josh Shapiro, and faces an incumbent drawing internal GOP criticism. Forecasters rate the race a toss-up or lean Democratic, reflecting midterm dynamics that historically challenge the president’s party alongside Perry’s limited margin for error in a district decided by low-single-digit margins in recent cycles.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPA-10 House Election Winner
Democratic Party
78%
Republican Party
22%
Democratic Party
78%
Republican Party
22%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Dec 16, 2025, 12:49 PM ET
Resolver
0x2F5e3684c...A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Resolver
0x2F5e3684c...Democrat Janelle Stelson holds a strong position in Pennsylvania’s 10th congressional district heading into the November 2026 general election, with prediction markets assigning her party roughly 78% implied probability of victory. The rematch against incumbent Republican Scott Perry follows his narrow 2024 win by about 1.3 percentage points in this competitive south-central Pennsylvania seat. Stelson secured the Democratic nomination decisively in the May primary, benefits from substantial fundraising and endorsements including from Governor Josh Shapiro, and faces an incumbent drawing internal GOP criticism. Forecasters rate the race a toss-up or lean Democratic, reflecting midterm dynamics that historically challenge the president’s party alongside Perry’s limited margin for error in a district decided by low-single-digit margins in recent cycles.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions