Will the number of U.S. Senate seats won by Democratic Party candidates be at least 15 in the 2026 U.S. Senate elections?

**Baseline count.** Democrats hold 13 of the 35 seats on the ballot. 15 or more wins therefore needs at least 2 net pickups, or 1 pickup plus holding all 13 Democratic-held seats. Nothing has been voted or called yet. The only contests that count are those with a Democratic ballot designation. Independents don't count, including Nebraska's Osborn, Idaho's Achilles, South Dakota's Bengs and Montana's Bodnar. - [2026-10-06] Cook Political Report ratings (page dated Oct 6, found via search snippet; the Cook page returned 403 when fetched). - Solid D (9): CO, DE, IL, MA, NJ, NM, OR, RI, VA. - Likely D (3): GA, MN, NC. - Lean D (1): NH. - Toss Up (7): AK, IA, KS, ME, MI, OH, TX. - Likely R (2): NE, SC. - Solid R (13). - That is 13 Democratic-leaning seats, with MI only a toss-up. https://www.cookpolitical.com/ratings/senate-race-ratings - [2026-10-06] Cook revised its estimate of Democratic pickups to two to six seats. It said "the question isn't whether Democrats will gain seats, but how many." It moved KS to Toss Up, NH to Lean D and NC to Likely D. https://www.cookpolitical.com/analysis/senate/senate-overview/senate-majority-squarely-democrats-sights-kansas-moves-toss-two - [2026-10-11] Decision Desk HQ forecast (search snippet; fetch returned 429): Democrats have a 56% chance of winning the Senate, with a projected 51 seats. OH, IA and ME are rated Toss Up, with Democrats at 51%, 52% and 54% respectively. https://votes.decisiondeskhq.com/forecast/2026/senate - [2026-10-10] Poliwave forecast, fetched (polls through Oct 10). It projects Democratic flips in OH, ME and AK. TX, IA and OH are toss-ups. - Michigan: D+2.9. - NH: D+6.7. - GA: D+6.9. - NC: D+10.9. - MN: D+13.3. - KS: R+7.0 in the model, though the poll average is D+1.6. - Its chamber outcome is "49 D · 49 R · 2 I". Independents are excluded from the Democratic-designation count, so its Democratic count is roughly 13 safe, likely or lean seats plus MI, plus 3 flips, about 17. - This is a single model's projection, not a call. https://www.poliwave.com/us/senate - [2026-10-05] CNN reports new polling with Democrats ahead or competitive in OH, AK and TX. The NYT/Siena poll shows AK at Peltola 50, Sullivan 43. UNH shows Maine's Jackson 51, Collins 47, the first public poll with him leading. CNN and NYT polls show Maine with no clear leader. https://www.cnn.com/2026/10/05/politics/10-senate-seats-most-likely-to-flip-2026 - [2026-10-09] Forbes polling roundup. - ME: Jackson 50, Collins 46 (WaPo-Schar). - IA: Hinson (R) 47, Turek 45 (Emerson). - OH: Brown 49, Husted 43 (CNN). - NC: Cooper 47, Whatley 35 (YouGov/Catawba). - TX: Talarico 51, Paxton 45 (NYT/Siena, Oct 3). - AK: Peltola 50, Sullivan 43 (NYT/Siena). https://www.forbes.com/sites/saradorn/2026/10/09/hottest-2026-midterm-races-democrat-jackson-leads-in-maine-senate-race-republican-hinson-ahead-in-iowa-updated-daily/ - [2026-10-03] NYT/Siena polls, via The Hill: Democrats lead by 6 in TX and 7 in AK, lead by 3 in OH, trail by 1 in IA and tie in KS. https://thehill.com/homenews/campaign/6127564-senate-polls-democrats-midterm-elections/ - [2026-10-07] An MS NOW piece citing the FiftyPlusOne polling averages has Democrats ahead in TX, AK, OH and NC, and neck and neck in ME, IA and KS. Democrats also lead in the defended GA, MI and NH. It flags Minnesota (Flanagan vs. Tafoya) as a possible source of anxiety for Democrats. https://www.ms.now/news/senate-elections-polling-midterms - [2026-10-08] CNN says MI, ME and "arguably" NH are proving harder for Democrats than the red-state targets. Its Iowa poll shows Hinson 45, Turek 43. https://www.cnn.com/2026/10/08/politics/democrats-senate-majority-iowa - [2026-10-01] Inside Elections moved GA and NC to Lean D, MI to Tilt D and MN to Lean D. It moved AK to Toss-up and TX to Tilt R. https://www.270towin.com/2026-senate-election/inside-elections-2026-senate-ratings - [2026-10-08] Covers.com says markets are offering odds on the number of Democratic seats and talks of 52 or more. It treats 47 seats (including those not up) as the reliable Democratic baseline, with MN, NH, NC and GA as the next tier. https://www.covers.com/politics/midterm-election-senate-odds-october-2026 - Scheduled events: the general election is Nov 3, 2026, and the contract closes Jan 3, 2027. No runoff is flagged in the sources I read. A Georgia runoff is possible if no one reaches 50%, but I did not check this. Resolution uses calls by at least four of the eight designated outlets, with state certification as fallback. BOTTOM LINE: A 13-seat Democratic floor (nine Solid D plus GA, MN, NC, NH) is rated favourable by all raters. Michigan is a toss-up to Tilt D and is the likeliest 14th seat. Reaching 15 needs at least one more seat from OH, ME, AK, TX, IA or KS, all currently rated toss-ups with October polls mostly showing Democrats ahead or tied. The current environment (Cook: "how many, not whether" Democrats gain) is favourable, but the margin is thin if Democrats lose any defended seat. NOT FOUND: No actual results, since nothing has been counted before Nov 3. I could not fetch Cook's full article, DDHQ's full page or CNN's pages. I found no Sabato, Race to the WH or Silver Bulletin seat-count figures in fetched form. I did not search for the contract's own price, as instructed. I also did not confirm that no Georgia runoff rules affect the outcome.

**Setup (confirmed).** Democrats need 15 of the 35 seats on the ballot. They hold 13 of them: CO, DE, IL, MA, NJ, NM, OR, RI, VA, GA, MI, MN and NH. Republicans hold 22. - Counting NC (open, Republican-held, rated Likely D), the favored-D count is about 14. A 15th seat needs one more flip from OH, ME, AK, TX, IA, KS or SC. - Nebraska's Dan Osborn is an independent with no Democrat on the ballot, so that seat does not count. - [2026-10-12] DDHQ forecast: Democrats have a 56% chance of Senate control and a projected 51 seats. Seats listed as favoring Democrats: - Safe D: IL, NJ, NM, VA, CO, DE, MA, OR, RI. - Likely D: MN, NC, NH, GA. - Lean D: MI, AK. - Toss Up: OH 51%, IA 52%, ME 54%, TX 57%. - Lean R: KS, SC. - The percentages are the favored side's chance. A tally of seats favoring Democrats is about 15 before the toss-ups, though that tally includes AK and ME. https://votes.decisiondeskhq.com/forecast/2026/senate - [2026-10-06] Cook Political Report (summary page snippet, not read in full): 9 Solid D, 3 Likely D (GA, MN, NC), 1 Lean D (NH), 7 Toss Up (AK, IA, KS, ME, MI, OH, TX), 2 Likely R (NE, SC) and 13 Solid R. That is 13 Democratic-leaning seats, so Cook's baseline is below 15. https://www.cookpolitical.com/ratings/senate-race-ratings - [2026-10-06] Cook estimates Democratic net pickups of two to six seats. Its analysis says the question "isn't whether Democrats will gain seats, but how many." If the 13 Democratic-held seats hold, two net pickups would make 15. Cook notes Republicans still hope to flip Michigan and hold Maine. https://www.cookpolitical.com/analysis/senate/senate-overview/senate-majority-squarely-democrats-sights-kansas-moves-toss-two (snippet only; the page returned 403 when fetched) - [2026-10-10] Vote-Scope projects 52 Democratic seats (range 48–55) and a 65% chance of a Democratic majority. Its seat count appears to include the two Democratic-caucus independents not up this year. Projected D flips: ME, TX, KS, OH. Its page also shows Polymarket Democratic control at 63%. https://vote-scope.com/en/us/senate/ - [2026-10-09] Poliwave: projected 51–49 Democratic caucus control, with flips in OH, ME and AK. Its toss-ups are NE (Osborn, I), OH, TX and IA, and it projects 49D, 49R, 2I after November. Its 15-seat math: 34 Democratic seats not up, plus 3 gains, gives 51 caucus seats. https://www.poliwave.com/us/senate - [2026-10-12] FiftyPlusOne model (as of about Oct 9): Democrats 73 out of 100 for the Senate, median outcome D+4 and 52 seats. https://fiftyplusone.news/forecast/senate - [2026-10-09] PollsMax is the bearish outlier: projected 49.9D/50.1R and 35.3% Democratic control odds. It shows ME (Collins) narrowly ahead and Michigan at Tilt D. https://www.pollsmax.com/senate/ - [2026-10-01] Inside Elections moved AK to Toss-up, GA and NC to Lean D, MI to Tilt D, MN to Lean D, NE to Lean R and TX to Tilt R. https://www.270towin.com/2026-senate-election/inside-elections-2026-senate-ratings - [2026-10-06] Sabato's Crystal Ball moved AK from Toss-up to Leans Democratic and SC from Safe to Likely R. https://www.270towin.com/2026-senate-election-predictions/ - [2026-10-11] Silver Bulletin (Nate Silver) forecast updated. Its snippet says Democratic Senate odds "aren't far behind" its House odds. YouGov polls show Democrats leading in TX, OH, KS, NE (counting Osborn as a Democrat) and MI. https://www.natesilver.net/p/nate-silver-2026-midterm-election-polls-model - [2026-10-06] Washington Post: Cook moved KS to Toss Up, NH to Lean D and NC to Likely D. https://www.washingtonpost.com/politics/2026/10/06/three-senate-races-shift-toward-democrats-cook-ratings/ - [2026-10-12] Historical reference class (Wikipedia, general knowledge): in the 2024 cycle, Democrats won 47 seats overall after Republicans flipped four. The 2026 map is described as favorable to Republicans, but the environment has moved toward Democrats. Axios cites voter discontent over gas prices, cost of living and the Iran war. I found no seat-count distribution for 2026. https://en.wikipedia.org/wiki/2026_United_States_Senate_elections **BOTTOM LINE:** Most forecasters have Democrats favored for about 14–15 of the 35 contests before the toss-ups. The 15-seat line is therefore close to a median outcome. Most models project Democratic gains of 2–5 seats, and PollsMax is the exception. Reaching 15 mainly needs the 13 Democratic holds, NC and one or two flips from OH, ME, AK, TX, IA or KS. The Nebraska independent does not count, and the Michigan hold is not safe. **NOT FOUND:** I found no model's probability distribution for the number of Democratic wins, and no per-seat Kalshi or Polymarket prices. I could not read Cook's full analysis because the page returned 403. I found no historical base rate for how often a party won this many seats in comparable midterms.

YES means: Democratic-designated candidates win at least 15 of the 35 Senate contests on Nov 3, 2026, as called by four or more of the eight designated outlets or, failing that, as certified. Independents do not count. - [2026-10-11] The YES path needs about 13 holds plus 2 flips, or 12 holds plus 3 flips. The 13 Democratic-held seats look solid in the polls. Georgia's RCP average (Sept 14–Oct 9) is Ossoff 51.3, Collins 43.2, a lead of 8.1. Trafalgar, a GOP-leaning pollster, had Ossoff +8 on Oct 7–9. RCP's Polymarket widget showed Ossoff at 96% (a market price for a different race, not this contract). Ossoff is near 50%, so a Dec 1 runoff is possible but unlikely. https://www.realclearpolling.com/polls/senate/general/2026/georgia/ossoff-vs-collins - [2026-10-10] Michigan is the weakest defended seat. McMorrow withdrew in July and El-Sayed is the nominee. Pollingsource's average is D+2.5 (49.4 to 46.9). Polls: Wedgewood Oct 9 had El-Sayed +6, InsiderAdvantage Oct 10 had +2, and Mitchell Oct 1 had +5. FiftyPlusOne's Oct 11 average is El-Sayed +4 (48.3 to 44.7). RCP is the outlier, at Rogers +0.5. https://pollingsource.com/senate/MI - [2026-10-08] Ohio is the most likely first flip. The RCP average (Sept 1–Oct 6) is Brown 47.3, Husted 44.2. 9 of the 12 listed polls have Brown ahead by 3 or more, including CNN +6, Marist +8 and YouGov +4. Only co/efficient, which showed Husted +1, had a Republican lead. The NYT/Siena poll (Sept 22–Oct 1) had Brown 49, Husted 46. https://www.realclearpolling.com/polls/senate/special-election/2026/ohio/husted-vs-brown - [2026-10-08] CNN's Ohio poll calls North Carolina the best Democratic pickup, with Ohio "next best." Brown is better known and better liked than Husted. https://www.cnn.com/2026/10/08/politics/cnn-polls-ohio-iowa-senate-governor-midterms - [2026-10-05] Another Ohio signal: the Ohio Capital Journal reports Marist had Brown +8 and Acton +6 for governor. It cites a data-center backlash as a drag on Husted. Suffolk/USA Today (Oct 2) had Brown 47, Husted 44, and independents favoring Brown by 55 to 28. https://ohiocapitaljournal.com/2026/10/05/poll-dems-open-lead-in-two-ohio-races/ - [2026-10-06] Sabato's Crystal Ball, as shown on 270toWin, moved Alaska from Toss-up to Leans D on Oct 6. Michigan went from Toss-up to Leans D on Sept 22. Crystal Ball's consensus map shows 48 D, 46 R and 2 I, with 5 seats unassigned. So a major rater has Michigan and Alaska both leaning Democratic, which gives 14 or 15 Democratic seats counting NC, Likely D. https://www.270towin.com/2026-senate-election/sabatos-crystal-ball-senate-2026 - [2026-10-10] Larry Sabato said on CNN's Smerconish that the Senate is Democrats' "to lose" as of today. He also said the race is very close. https://www.mediaite.com/media/news/top-pollster-larry-sabato-says-us-senate-is-democrats-to-lose-but-warns-its-very-close/ - [2026-10-11] DDHQ gives Democrats 56% for Senate control with a projected 51 seats, as of its Oct 11 update. That projection includes the two Democratic-caucus independents not on the ballot, so the implied Democratic count among the 35 contests is about 15. That is right at the threshold, which supports YES only if the mean holds. https://votes.decisiondeskhq.com/forecast/2026/senate - [2026-10-03] DDHQ's Georgia polling average showed Ossoff +9.0. The DDHQ page lists a Wedgewood poll with Ossoff +10. https://votes.decisiondeskhq.com/polls/general-ballot-test/2026-ga-us-senate/georgia - Most likely YES path (my synthesis from the above): hold GA, NH, MN and the nine Solid D seats, which is 13. Hold MI as well, which is 14. Win NC, where Cooper led 47 to 35 in the Oct 9 YouGov poll cited in the Forbes roundup. Add one of OH, AK, ME or TX. NC is a Republican-held open seat and counts as a pickup, so holding all 13 plus NC gives 14 and one more flip gives 15. Ohio is the best single candidate for that flip, with Alaska next (Sabato Leans D, and the NYT/Siena poll in the colleagues' report has Peltola +7). - Prerequisite: no Democratic loss among GA, MI, NH or MN. A Michigan loss would require two further flips beyond Ohio. The path uses the 4 pickup seats NC, OH, AK and ME or TX. Four independent pollsters now show Democrats ahead in OH, AK and TX, so there are several routes to 15. BOTTOM LINE: The strongest case for YES is that Democrats are favored or leading in about 14 seats (the 13 defended plus NC), with Ohio and Alaska leading in recent polls as the most likely 15th, so one flip from several toss-ups suffices. The main risk is a Michigan upset, which would force two flips. NOT FOUND: Any model's probability distribution for the number of Democratic seats, and per-seat Kalshi prices (not searched, per instructions). I did not read the full Cook, Silver Bulletin or FiftyPlusOne pages. I found no Georgia runoff-risk estimate beyond the polling lead.

YES means: Democratic-designated candidates win at least 15 of the 35 Senate contests on Nov 3, 2026, as counted by at least four of the eight designated outlets or, failing that, by state certification. - [2026-10-12] The math starts from a 13-seat Democratic base. Reaching 15 needs two clean wins beyond the holds. The 14th seat would come from NC, which VotePredictor lists as a flip; its "Safe D 97%" label may be over-optimistic, since Cook and Inside Elections rate NC Likely D / Lean D. The 15th would need a true Republican-state flip such as OH, ME, AK, TX, IA or KS. No Democratic seat is rated safer than any other, and a single Michigan or Minnesota loss means a Democratic sweep of the toss-ups is needed to still reach 15. VotePredictor's seat model expects 50.5 Democratic seats, with a 47–54 range in 80% of simulations. That count includes the two independents who are not up this year. Subtracting them gives about 13–14 expected contested wins, which is below 15. The 15-seat line sits at or above the model's median. https://votepredictor.com/senate - [2026-10-12] VotePredictor puts the flip seats at only 51–61% for a Democratic win: AK 58%, IA 59%, ME 51%, OH 57%, TX 61%. Kansas is Lean R at 72%. Even if each of the four toss-ups were a coin flip, they would produce about 2 expected flips, which is just enough. Because the toss-ups carry real correlation, a modest polling miss could take most of them away at once. https://votepredictor.com/senate - [2026-10-10] Michigan is not safe. Cook still lists it as a Toss Up, Inside Elections at Tilt D, and Sabato as Toss-up, per PollingSource's fetched page. Its poll average is only D+2.5 across 4 polls. Recent individual polls: InsiderAdvantage El-Sayed 48–46, YouGov 49–48, Quantus 47.6–46.5, co/efficient 45–45. A Trump-won state, a nominee who emerged from a 50.5–49.5 primary, and about $68.7M of outside spending, mostly GOP-aligned, all point to a possible loss. https://pollingsource.com/senate/MI - [2026-10-12] The Michigan nominee was the polling underdog earlier. The Glengariff poll of May 12 had Rogers ahead of Stevens and McMorrow. McMorrow then withdrew in July, and El-Sayed won the Aug 4 primary. Wikipedia describes El-Sayed and Stevens as statistically tied after McMorrow left. The Democratic nominee changed late and is a progressive, which is a risk factor for the 13-seat hold. https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Michigan - [2026-10-12] Minnesota is tighter than its "Likely D" rating implies. The Star Tribune/KARE 11/Mason-Dixon poll (Oct 5–7) has Flanagan 47, Tafoya 43. Tafoya leads independents 38–32. Earlier polls showed Flanagan +1 (InsiderAdvantage) and a 42–42 tie in mid-September (co/efficient 43–42). MPR notes the race is drawing little national money. Neither side is investing heavily, which means Democrats may be under-defending a seat where the polling margin is only about 4 points. https://mprnews.org/story/2026/10/12/peggy-flanagan-michele-tafoya-senate-race-stays-quiet-in-minnesota - [2026-10-12] Polymarket's Minnesota figure is only 86% for Flanagan (KFGO, Oct 8), which compounds across seats. Georgia is about 96% for Ossoff per RCP/Polymarket. Treating Georgia, Minnesota and Michigan as independent, the chance that all three Democratic holds survive is well below 80%. Every lost hold raises the bar for flips. https://kfgo.com/2026/10/08/minnesota-senate-race-may-be-tightening-according-to-poll-from-real-clear-polling/ - [2026-10-09] Georgia's runoff rule is a technical NO route. A Dec 1 runoff is scheduled if nobody gets 50%. Ossoff's RCP average is 51.3–43.2, so a runoff is unlikely, but a third-party share could still make it matter. A runoff would be called after Election Day but before the Jan 3 close, so it would still count. https://www.realclearpolling.com/polls/senate/general/2026/georgia/ossoff-vs-collins - [2026-10-08] The flips rely on polls with mixed signals. RCP's latest polls show Ohio at Brown +6 (CNN) and +3 (NYT/Siena), but also Husted +1 (co/efficient). Iowa has Hinson +2 (CNN). Maine has Jackson +3 (Fabrizio/Anzalone) and Collins +2 (co/efficient). Ohio is the most plausible flip and the others are near coin-flips. Poliwave's Oct 6 poll average has Maine at R+0.6 and Iowa at D+1.2 only. The Maine seat, a long-time Republican hold, has historically outperformed its polling. https://www.realclearpolling.com/latest-polls/senate - [2026-10-12] Even Democratic-leaning forecasters have only modest cushions. Poliwave projects Ohio at D 50.3–49.7 and Iowa at R 50.5–49.5, so its 3-flip projection rests on margins under one point; its Democratic count of about 17 contested seats is fragile. https://www.poliwave.com/us/senate - [2026-10-12] Bullish projections that clear 15 (e.g. five Democratic pickups with no losses, from Michael Levy's Substack) are single-analyst predictions that assume every toss-up breaks one way. They are not evidence about the distribution. https://michaelilevy.substack.com/p/a-blue-wave-a-red-undertow-and-my - [2026-10-12] Nebraska and other independents don't count. Osborn (I) is polled as competitive in some models (Poliwave toss-up), but even a win there adds nothing to the Democratic-designation count, and some "Democratic seat" totals in media include him or the two caucusing independents. The resolution rule is stricter than most headline projections, and Democratic-caucus seat counts overstate this contract's count by the independents. https://www.poliwave.com/us/senate BOTTOM LINE: Reaching 15 needs the three shaky holds (MI, MN, GA) plus NC and at least one genuine toss-up flip, or two flips if any hold fails. The seat-count models centre near 14–15 contested wins, so this is close to a median outcome and the correlated polling risk cuts against it. Michigan and Minnesota are the main downside paths. NOT FOUND: A published probability distribution of Democratic seat wins; a runoff-specific analysis for Georgia beyond the rule; Cook's full article (blocked, per colleagues); the contract's own pricing (not searched, as instructed).