Democrats Claim Nine-Seat Senate Gain in Midterms

Democrats won or led in enough Senate races to reach a net gain of nine seats, flipping Republican-held seats in Kansas, South Carolina, and Texas.

Updated on Nov. 6, 2026 in Elections

Bold flat-color editorial illustration of a simplified dome silhouette in navy and cream with a red upper half, evoking a shift in congressional control. — Democrats won or led in enough Senate races to reach a net gain of nine seats, flipping Republican-held seats in Kansas, South Carolina, and Texas. AI Illustration. Upload story photo >

Live Poll

Do you think the country is heading in the right direction now?

Democrats won or led in enough Senate races to secure a net gain of nine seats, and seized control of both chambers of Congress in Tuesday's elections. Wins in Kansas, South Carolina, and Texas flipped Republican-held seats.

Why it matters

A net gain of nine Senate seats would be the largest Democratic Senate gain since 1958, and the chamber shift gives Democrats control of both houses of Congress. The results also outpaced earlier expectations, as prediction markets had given Democrats only a 30% chance of Senate control last year.

Democrats won or led in enough races to reach a net gain of nine Senate seats, and the Democratic win in Kansas was its first Senate seat there since 1932. The Mississippi race remains too close to call, leaving the final Senate count unresolved.

The players

Chuck Schumer

Chuck Schumer is the Senate Democratic leader, whose odds of retaining leadership rose from 53% two months ago to 90%, according to Kalshi.

Harry Enten

Harry Enten is a CNN political analyst who declared the historic Senate gains on air.

Kalshi

Kalshi is a regulated prediction market platform that tracks event odds, including the leadership-retention chances cited in this story.

The details

Democrats won Republican-held Senate seats in Kansas, South Carolina, and Texas, with Texas electing its first Democratic senator since 1988. Kansas and Maine were both won or led by Democrats in the same year for the first time.

Tuesday, November 3, 2026: Democrats seized control of both chambers of Congress.
Friday, November 6, 2026: CNN's Harry Enten declared the historic Senate gains.

Season Trajectory

The nine-seat Democratic net gain would be the largest Senate gain for the party since 1958, when Democrats last made a comparable jump in the chamber. The result also reflects the sharp movement in prediction-market odds, which gave Democrats only a 30% chance of Senate control last year.

With Democrats now holding control of both chambers of Congress, the party gains the ability to advance its legislative agenda without Republican majorities in either chamber. The unsettled Mississippi race means the final Senate composition, and the margin Democrats will work with, is not yet certain.

The takeaway

The scale of the Democratic Senate gain shows how quickly election expectations can shift, with odds moving sharply in the months before the vote. Readers should watch the final Mississippi result, which will set the exact size of the Democratic Senate majority.