Delaware Senate

Chris Coons (D) · running · Cook PVI D+8 · last result 59.44% D

Democratic

Chris Coons

Wikipedia bio

Christopher Andrew Coons is an American politician and lawyer serving as the senior United States senator from Delaware, a seat he has held since 2010. A member of the Democratic Party, he previously served as the county executive of New Castle County from 2005 to 2010.

Source: Chris Coons

Republican

Michael Katz

Wikipedia bio

Michael S. Katz is an American physician and politician from the state of Delaware.

Source: Michael Katz (politician)

Polymarket · Democrat · 97¢. The contract price, not a forecast model.

Desk notes

Generated from the sourced figures on this page. Not a separate report.

Chris Coons (D) is the incumbent, running. The ratings consensus is Safe D. Cook’s cell is dated Oct 6, 2026. 10 forecaster cells are stored. Kalshi Chris Coons 98¢ (mid). Polymarket Democrat 97¢ (mid). The 2024 presidential margin in this state was D+14.7. The 2020 presidential margin in this state was D+19.0.

Polling average

No polling average for this race. That is an empty state, not a tie.

Ratings

Cook Political ReportOct 6, 2026Solid D
Sabato's Crystal BallOct 14, 2026Safe D
Inside ElectionsOct 15, 2026Solid D
Decision Desk HQOct 15, 2026Safe D
RealClearPoliticsOct 12, 2026Solid D
Silver BulletinOct 15, 2026Solid D
FiftyPlusOneOct 17, 2026Safe D
The EconomistOct 15, 2026Safe D
Fox NewsOct 13, 2026Solid D
Split TicketOct 18, 2026Safe D

Quoted from the Wikipedia predictions table, not scraped from the raters.

Markets

Raw yes-prices. Not vig-adjusted. Contracts under 1¢ are omitted.

KalshiKalshiOct 19, 7:32 PM EDT

Chris Coons98¢mid · spread 1¢
Michael Katz2¢mid · spread 1¢

PolymarketPolymarketOct 19, 7:32 PM EDT

Democrat97¢mid · spread 2¢
Republican3¢mid · spread 2¢

PredictIt is off. Its terms limit the feed to non-commercial use.

Price history

through Oct 19, 7:18 PM EDT

WindowSep 19, 8:00 PM EDT

KalshiDemocratic party 100¢ at Oct 18, 12:00 PM EDT· Kalshi public candlesticks · 15 hours

PolymarketDemocrat 97¢ at Oct 19, 7:18 PM EDT· Polymarket CLOB prices-history · 692 hours

KalshiChris Coons 98¢ at Oct 19, 7:18 PM EDT· hourly pull · 4 hours

KalshiMichael Katz 2¢ at Oct 19, 7:18 PM EDT· hourly pull · 4 hours

PolymarketRepublican 2¢ at Oct 19, 7:18 PM EDT· hourly pull · 4 hours

Marker Oct 5, 8:00 PM EDT · Rating dated Oct 6, 2026

Marker Oct 14, 8:00 PM EDT · Rating dated Oct 15, 2026

Marker Oct 16, 8:00 PM EDT · Rating dated Oct 17, 2026

Marker Oct 12, 8:00 PM EDT · Rating dated Oct 13, 2026

Marker Oct 11, 8:00 PM EDT · Rating dated Oct 12, 2026

Marker Oct 13, 8:00 PM EDT · Rating dated Oct 14, 2026

Marker Oct 17, 8:00 PM EDT · Rating dated Oct 18, 2026

Scale is fixed at 0–100¢. Hourly closes. A dashed line is a rating date or a poll end date stored on this race. Times are US Eastern.

Money

No FEC snapshot for this race.

Recent polls

No individual polls in this snapshot.

What changed

market
Delaware Senate: the stored prices were compared and no contract moved by a full cent.
market
Delaware Senate: the stored prices were compared and no contract moved by a full cent.
market
Delaware Senate: the stored prices were compared and no contract moved by a full cent.
market
Delaware Senate: the stored prices were compared and no contract moved by a full cent.

Results

Official results are not being treated as returns yet. Election Day is November 3, 2026.

Results appear here once official returns start on election night, November 3, 2026.

Updated Oct 19, 7:23 PM EDT · snapshot Oct 19, 7:23 PM EDT · mode live