Updated Oct 16, 2026, 1:45 PM ET
House · 3 November 2026

CO-07 House 2026

98.0% DBrittany Pettersen leads TruthIndex™Safe D
Polymarket
97.7%
Kalshi
98.7%
Spread
1.0 pts
24h
–
7 days
+2.1
Updated
Oct 16, 2026, 1:45 PM ET
Latest coverage

Live News

Recent coverage for CO-07 House.

  1. ANCA Endorses Congressional Allies; Grades Members of Congress on Pro-Armenian Priorities

    Rep. Scott Eugene DesJarlais (R-TN-04) – C [...] Rep. Janelle Bynum (D-OR-05) – C

  2. State candidates share their concerns, views for early childhood education

    The Canon City Daily Record article covers early childhood education concerns and views shared by state candidate(s) for Colorado’s 7th Congressional District.

    Canon City Daily RecordPettersen

Brittany Pettersen, last 60 days

How to read this chart

The green line is the TruthIndex™, the chance of this outcome. It combines the prices on both venues and gives more weight to the venue with more money in its order book. The two thinner lines are Polymarket's and Kalshi's own prices, and the grey band between them shows how far apart the two venues are.

The pale bands behind the lines are the rating zones (Toss-up, Lean, Likely and Safe), so you can see when the race moved from one rating to another. Move along the chart, or use the arrow keys, to read the values for each day.

More in Methodology
TruthIndex™PolymarketKalshiGap between the venuesRating zones

All outcomes

OutcomeTruthIndex™PolymarketKalshiSpread24h
DBrittany Pettersen 98.0% 97.7% 98.7% 1.0 pts –
RTim Bennett 2.3% 2.5% 1.9% 0.6 pts –

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Candidates & Background

Brittany Pettersen

Brittany Pettersen

Democratic U.S. Representative for Colorado's 7th congressional district (since 2023)

Brittany Pettersen, a Democrat who has represented Colorado's 7th congressional district since 2023 after serving in both chambers of the Colorado legislature, seeks reelection in 2026 against Republican Tim Bennett, a U.S. Army veteran.

Born 1981

Tim Bennett

Republican

Tim Bennett, a U.S. Army veteran, is the Republican nominee for Colorado's 7th congressional district in 2026, challenging Democratic incumbent Brittany Pettersen in the November 3 general election.

Margin of victory

Each venue's margin market, shown on its own: the two venues set their ranges differently.

Kalshi999 contracts

Colorado's 7th District margin of victory

Pettersen, 12+ pts
93.8%
Pettersen, 15+ pts
86.0%
implied
Pettersen, 18+ pts
76.0%
implied
Pettersen, 21+ pts
66.0%
implied
Pettersen, 24+ pts
56.0%
implied
Pettersen, 27+ pts
45.0%
implied
Pettersen, 30+ pts
35.0%
implied
Pettersen, 33+ pts
24.5%
Pettersen, 36+ pts
14.0%
Source: Kalshi market

Polymarket$14.4K traded

CO-07 House Election Margin of Victory

Republican Wins
0.5%
Democrat 0-10%
3.0%
Democrat 10-15%
0.6%
Democrat 15-20%
13.7%
Democrat 20-25%
32.0%
Democrat 25-30%
30.5%
Democrat 30-35%
18.5%
Democrat 35-40%
5.3%
Democrat 40%+
1.7%
Source: Polymarket market

Each venue's market

Polymarket$28.0K traded

Prices which party wins.

Brittany Pettersen: Counted · bid 96.6% / ask 98.8% · $1.3K within 5 pts

This market will resolve according to the party of the candidate who wins the CO-07 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 3, 2026. ​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/).

Full rules on Polymarket

Kalshi2.3K contracts traded

Prices which party wins.

Brittany Pettersen: Counted · bid 97.6% / ask 99.8% · $701 within 5 pts

Contract shown: Brittany Pettersen

If the House member sworn in for CO-07 for the term beginning in 2027 is a member of the Democratic Party, 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.

Full rules on Kalshi