Battleground Desk

2026 Senate and House Battlegrounds

7days to
Nov 3

Data as of Oct 27, 2026

Senate today

53–47

Democrats need a net +4 (VP breaks ties). RotoWire

House today

219–214

2 vacancies; 218 for control. NBC News

Generic ballot

D+8.7

Average of five averages; range D+7.3 to D+9.2. Rio Times

Senate control, Dem

57%

DDHQ model, 51 seats projected. Markets 64–65%. Delaware Online

House control, Dem

79%

DDHQ model, 238 seats projected. Markets 90–93%. DDHQ

Senate balance

Seats safe or not up, plus the 14 races in play

Safe/not up DIn play, D-favoredIn play, R-favoredSafe/not up R

Favorite set by the probability column in the Senate seat table. The 51-seat line marks Democratic control.

Democrats' path to 51

  1. Hold Michigan, Georgia, Minnesota and New Hampshire.
  2. Flip North Carolina, rated Likely D.
  3. Win 3 of 6 GOP-held toss-ups: Alaska, Ohio, Maine, Texas, Iowa, Kansas.

Route per Cook's Oct 20 ratings, via RotoWire. Sabato says Republicans need 4 of 5 of its toss-ups to hold the chamber (Newsweek).

Generic ballot

Every major average shows Democrats ahead by 7 to 9 points. The D+7.4 mark is the bottom of the current range: ActiVote's Oct 21 poll and US Polling Data's early-October average.

Averages by aggregator

Dem margin, points

Latest national polls

Via PollingSource

PollsterEnd dateSampleDemRepMarginvs D+7.4

Red-state toss-ups

Five Trump states where Republicans are now spending to defend. Ohio, Alaska and Texas lean toward the Democrat in polling; Iowa and Kansas sit inside the margin. Texas gets a full breakdown.

Resource shifts

Republican money is moving from North Carolina and Georgia into states Trump carried three times, and Musk-funded money is flooding Texas.

Combined ad spending by Senate race

General election, $M, through Oct 20 · KCRA

Shift log

Moves that redrew the map

    Texas outside money, pro-Paxton vs Dem

    $239M

    vs about $45M from top Democratic groups. U.S. News/Reuters

    Ohio ad gap, GOP over Dem

    $62M

    $178M vs $116M, Sept 1 to Election Day. Punchbowl News

    Senate seat by seat

    Click a party to lock a race and see how the count moves. Unlocked races are simulated from their probability.

    Expected Dem seats

    —

    Dem reach 51

    —

    Most likely outcome

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    Seat distribution

    Dem caucus seats across 20,000 simulated runs. This dashboard's own illustration from the table's probabilities, not a published forecast.

    StateHeldMatchupRatingMarketsDDHQDem win prob.Lock

    Probability used: Polymarket/Kalshi consensus from RotoWire (Oct 21), Kalshi (Oct 15) and Action Network (Kansas, Oct 26); DDHQ where no market price exists. DDHQ does not name the favorite in its four toss-ups (TU). Ratings follow Cook's Oct 20 list. Nebraska's Osborn is an independent. Gold edge marks the five red-state focus races.

    House seat by seat

    Democrats need a net of about three or four seats. Cook projects gains of 12 to 22, with Democrats favored outright in 218 seats and 17 pure toss-ups (Washington Post).

    DDHQ projection

    238 D

    79% Dem control. DDHQ

    Shift needed for 218

    4.6 pts

    Uniform swing toward Dems from 2024. NBC News

    Closest House races nationally

    Favorite's chance, DDHQ

    DDHQ lists these as toss-ups without naming the favorite in its summary table.

    Sources

    Every figure links to its origin. Gathered Oct 27, 2026.