Will the number of 2026 U.S. Senate (including special elections) and gubernatorial general elections, held in the 19 states that Kamala Harris carried in the 2024 presidential election, won by a nominee of the Republican Party be exactly 2 at the November 3, 2026 general election?

The count is currently expected to land at 2, 3 or 4. The Republicans in contention are Scott (VT governor), Ayotte (NH governor), Collins (ME Senate) and Sununu (NH Senate). Only Maine is truly uncertain, and NH Senate is a smaller risk. I found no Republican with a realistic chance in any of the other 23 races. I did not check those races individually, so that part rests on background knowledge and is not confirmed. - [2026-10-16] The qualifying races are 12 Senate races (CO, DE, IL, ME, MA, MN, NH, NJ, NM, OR, RI, VA) and 15 governor races (CA, CO, CT, HI, IL, ME, MD, MA, MN, NH, NM, NY, OR, RI, VT). That is 27 in total. Wikipedia's Vermont page calls VT and NH the only two Republican-held governorships up in Harris states. https://en.wikipedia.org/wiki/2026_Vermont_gubernatorial_election - [2026-10-07] Vermont governor: Phil Scott (R, incumbent, seeking a sixth term) led Democrat Amanda Janoo 46–43 in a State Navigate poll of likely voters (±3.2). That is much closer than his 73% in 2024. Cook rates the race Solid R, but I could not confirm when that was last updated. Cook's governor-ratings page lists "VT Scott" in Solid R. https://politicalwire.com/2026/10/07/phil-scott-barely-leads-in-vermont-governors-race/ and https://www.cookpolitical.com/ratings/governor-race-ratings - [2026-10-06] New Hampshire governor: Kelly Ayotte (R, incumbent) leads Democrat Cinde Warmington by roughly 9–14 points depending on the poll. YouGov (Oct 5) had it 49–40, and the Pollsmax average is R+9.8. UNH (Aug 27) had it 49–39. RCP shows Ayotte +14, with a "Leans GOP" ranking. Cook's page lists NH Ayotte under Solid D, Likely R and Solid R headings in the snippet, so its current rating is unclear. Cook's race page said Likely R and was updated Sep 9. https://www.pollsmax.com/governor/new-hampshire/ and https://www.realclearpolling.com/polls/governor/general/2026/new-hampshire/ayotte-vs-warmington - [2026-10-16] New Hampshire Senate: Democrat Chris Pappas leads Republican John E. Sununu 50–43 in a new NPA Polling poll of likely voters (±4). Political Wire reported this on Oct 16. https://politicalwire.com/2026/10/16/pappas-leads-sununu-in-new-hampshire-senate-race-2/ - [2026-10-12] New Hampshire Senate: local TV reported Pappas's lead growing from about 2 points a month earlier to 7–8 points. https://wgme.com/news/local/democrat-chris-pappas-appears-to-hold-narrow-lead-over-gop-republican-john-sununu-in-new-hampshire-senate-race - [2026-10-05] New Hampshire Senate: the RCP average was Pappas +6.7 (49.4–42.7) across 8 polls from Sep 15 to Oct 5. The polls were Rasmussen D+5, YouGov D+8, St. Anselm D+7, Trafalgar D+6, UNH D+8 and NYT/Siena D+5. The Rasmussen poll (Oct 2–4) showed Sununu narrowing from an earlier 11-point deficit. Time magazine (Oct 5) says Republicans still see a narrow path. https://www.realclearpolling.com/polls/senate/general/2026/new-hampshire/pappas-vs-sununu and https://www.newsweek.com/gops-sununu-surges-in-bid-to-flip-democrats-new-hampshire-senate-seat-12526638 - [2026-07-25] Maine Senate: Graham Platner won the June 9 Democratic primary over Gov. Mills but withdrew on July 10 after sexual assault accusations and other controversies. A nominating convention picked former state Senate president Troy Jackson as the Democratic replacement on July 25. Maine uses ranked-choice voting, and Collins (R) is seeking a sixth term. Wikipedia describes the race as among the most competitive of 2026. https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Maine - [2026-05-18] Maine Senate polling that predates Platner's withdrawal is of limited use. Pan Atlantic had Platner 48, Collins 41 in a May 8–18 poll. In March, Emerson had Platner +7 and RCP's average was Platner +7.6. I could not find any current Collins–Jackson polling. https://www.newsweek.com/susan-collins-chances-of-losing-get-worse-in-maine-after-janet-mills-exit-11974491 - [2026-10-16] Maine and New Hampshire are the only two Senate races in the 19 states with a Republican nominee that I found to be competitive. The other Senate races in these states have Democratic incumbents or nominees who are favored (not individually verified). - [2026-11-03] The election is on Nov 3. The question closes Dec 15, so there is time for any contested count. Maine's ranked-choice tabulation could add some delay in a close race. BOTTOM LINE: Scott and Ayotte look very likely to win, which puts the count at 2 or more. Whether it ends at exactly 2 mostly depends on whether Collins wins Maine (which would make it 3) and, less likely, on a Sununu upset in NH, where Pappas leads by about 5–8 points. There is a small chance Scott or Ayotte loses, which would lower the count. Collins–Jackson polling is the key gap in my research. NOT FOUND: Current Collins–Jackson polling or ratings for Maine. Cook's current Senate ratings, which returned a 403 error. Any race-by-race check of the other 23 races. Any Maine governor polling.

Race set: the 27 contests are 12 Senate races (CO, DE, IL, MA, ME, MN, NH, NJ, NM, OR, RI, VA) and 15 governor races (CA, CO, CT, HI, IL, ME, MD, MA, MN, NH, NM, NY, OR, RI, VT). Only four have a plausible Republican winner: NH governor (Ayotte), VT governor (Scott), ME Senate (Collins) and NH Senate (Sununu). "Exactly 2" needs two of those four to win and no upset elsewhere. Pairs that qualify include Ayotte + Scott, or one of them plus Collins or Sununu. - [2026-10-06] Ayotte is the incumbent NH governor (R) and is statistically tied with Warmington in the UNH poll from late September. Saint Anselm/AARP (Oct 6) has Ayotte up 52–45. Averages show Ayotte ahead by 10 to 12 points (270toWin +12.5, RCP +10.7). Cook rates it Likely R. https://en.wikipedia.org/wiki/2026_New_Hampshire_gubernatorial_election - [2026-10-06] Cook governor ratings: NH (Ayotte) and VT (Scott) are both Likely R. Oregon, Maine and Minnesota are not listed as competitive R targets. Cook's NH Senate rating moved on Oct 6 from Toss-up to Lean D. https://www.cookpolitical.com/ratings/governor-race-ratings - [2026-10-06] Sabato moved Scott (VT) from Safe R to Likely R. Wikipedia reports Scott was outraised by Janoo in September 2026 and that this is his most competitive race in a decade. Scott is described as the nation's most popular governor and has won five times. https://en.wikipedia.org/wiki/2026_Vermont_gubernatorial_election - [2026-10-14] Sabato moved NH Senate from Lean D to Likely D. Its Senate summary is 49 at least Lean D, 46 at least Lean R, and 5 Toss-ups. It writes that there are "not really any clear signs of a Republican recovery". It also moved MN Senate from Likely D to Lean D. https://centerforpolitics.org/crystalball/10_14_senate (from search snippet; the page returned 403 on fetch) - [2026-10-05] NH Senate: RCP average has Pappas (D) up 6.7 over Sununu (R) (49.4 to 42.7) across eight polls. Individual polls range from D+5 to D+8. RCP's note says Pappas "probably pulls it out" but that Sununu can outrun a wave. https://www.realclearpolling.com/polls/senate/general/2026/new-hampshire/pappas-vs-sununu - [2026-10-14] An AMAC piece claims Sununu is closing the gap, but it is an advocacy-leaning source and it conflicts with the other polling and Sabato's move toward the Democrats. https://amac.us/newsline/dems-headed-for-a-senate-shock-in-new-hampshire - [2026-10-06] Maine Senate (Collins vs. Jackson): Cook rates it a Toss-up. It is the only Republican-held Senate seat on the ballot in a Harris state, and Cook had it Lean R at the start of the cycle. I could not retrieve Maine polling numbers. https://www.cookpolitical.com/ratings/senate-race-ratings - [2026-10-06] Environment: the NH Journal describes Trump's approval as "dismal", with a Democratic wave under way. Sabato and Cook have moved many races toward the Democrats this cycle. https://nhjournal.com/pappas-rides-dem-wave-ayotte-defies-political-gravity-in-aarp-poll/ - [2026-10-05] RCP's governor map lists NM as Leans D (moved from Likely D on 10/5). OR is rated Lean D by Sabato (moved on Oct 6) and Cook, with polling described as tight. Both are small upset tails, as are ME and MN. https://www.realclearpolling.com/maps/governor/2026/toss-up - [Historical base rate] I found no source quantifying this. From memory, which I did not verify, Republicans won 2 of these seats in 2022 (NH governor, VT governor). In 2024 they won NH governor, and none in 2018. The count of 2 has recurred, but each cycle's mix of races differs. BOTTOM LINE: Both governor incumbents (Ayotte, Scott) are favoured, and the Maine and New Hampshire Senate seats lean toward the Democrats in a Democratic-leaning year. Two governors with both Senate seats lost is the modal outcome but not a lock. The count could miss 2 if Collins wins and Scott or Ayotte loses, or if both Collins and Sununu win, which would give 3 or 4. The count could also fall to 1 if either governor loses with no Senate win. NOT FOUND: Kalshi/Polymarket odds for the individual races (excluded by instruction); Maine Senate polling numbers; Vermont governor polls; a quantified historical base rate for this exact count.

YES means: Republican nominees win exactly 2 of the 27 Senate and governor races in the 19 Harris states on Nov 3, 2026. - [2026-10-16] The most likely path to YES is Ayotte (NH governor) and Scott (VT governor) both winning, with Collins losing in Maine and Sununu losing in NH, and no Republican upset in the other 23 races. This path needs the Democrats to win both Senate seats. The Senate seats look more winnable for Democrats than the governorships look for Democrats. https://www.realclearpolling.com/latest-polls/general-election - [2026-10-15] Maine Senate polls lean toward Jackson (D). Suffolk (Oct 8–11, likely voters) had Jackson 49–47. Rasmussen (Oct 11) also had Jackson +2. Fox News calls the race a statistical tie. https://www.foxnews.com/politics/collins-insists-socialist-rival-wont-beat-her-maines-money-machine-youll-lose-big-time - [2026-10-09] Other recent Maine polls show larger Jackson leads. Washington Post/Schar (Sept 30–Oct 5, n=800 likely voters) had Jackson 50–46, and independents went Jackson 53–40. The FiftyPlusOne average had Jackson +2. In that poll, 55% wanted Democrats to win the Senate, 63% disapproved of Trump, and 58% said Collins sides with Trump too often. https://www.pressherald.com/2026/10/09/another-polls-shows-troy-jackson-leading-a-tight-maine-senate-race/ - [2026-10-09] Collins's pay-to-play story adds to the Democratic case. ProPublica reported an FBI probe of her circle that stalled once Trump took office. Collins denies wrongdoing. 52% of voters in the Post poll said her 30 years in the Senate is a bad thing. https://www.pressherald.com/2026/10/09/another-polls-shows-troy-jackson-leading-a-tight-maine-senate-race/ - [2026-10-04] Marist (Oct 1–4, n=1,505 registered voters) had Jackson 51–47. Maine Democrats lead the generic ballot by 9 points. The same poll had Pingree (D) +12 for governor. Maine's governor race is therefore not a Republican path. https://maristpoll.marist.edu/polls/midterm-elections-in-maine-october-2026/ - [2026-10-14] NH governor: a co/efficient poll (Oct 14) had Ayotte 55–34 over Warmington. That is a 21-point lead, the largest I found. It sits with St. Anselm at +7 and YouGov at +9, so Ayotte leads in every poll listed. https://www.realclearpolling.com/latest-polls/general-election - [2026-10-13] Ayotte's approval was 51–44 in UNH polling reported on Oct 13, while the Warmington race was reported at 9 points on Oct 7. That supports the claim that Ayotte can outrun the national environment. https://wbsm.com/new-england-governor-approval-ratings - [2026-09-28] Vermont: a Vermont Public/Braun poll (n=817, ±3.4) had Scott 42–32, with 20% undecided. Among likely voters it was 44–34. 40% of Democrats approve of Scott. The pollster ties this to Scott not being seen as a national Republican. His campaign says public polling has always undervalued him. https://www.wcax.com/2026/09/28/vermont-public-poll-shows-scott-leading-janoo-tight-race-governor/ - [2026-10-11] Vermont has outlier risk. UNH had Janoo 49–43, and the Oct 7 State Navigate poll had Scott up 3. Boston Globe says Scott won each of his last three races by 40+ points, and fewer than half of Vermonters now approve of him. Even so, two of three polls have Scott ahead, and he is the last anti-Trump Republican governor. https://www.bostonglobe.com/2026/10/11/metro/vermont-governor-phil-scott-amanda-jano/ - [2026-10-11] Elsewhere, a Republican win looks unlikely. Maine governor: Pingree led Charles 52–39 (AARP, Sept 20–22) and 49–36 (Post, Oct 9). New Mexico governor: Haaland led Hull 49–42 in an Albuquerque Journal poll (Oct 11). That is the closest of the other governor races I checked, and it is still a 7-point Democratic lead. https://www.bangordailynews.com/2026/10/01/politics/elections/maine-election-governor-2026-hannah-pingree-bobby-charles-aarp-poll/ and https://www.realclearpolling.com/latest-polls/governor BOTTOM LINE: YES needs the "two governors hold, both Senate seats go Democratic" outcome. The Maine Senate polls (Jackson +2 to +4) and the New Hampshire Senate polls (Pappas +5 to +8) make that outcome the modal one, in a Democratic-leaning year. YES fails if Collins holds on (a 2-point race, with her history of outrunning polls), if Scott falls, or if Sununu wins. I found no credible sign of an upset in the other 23 races. NOT FOUND: Cook's or Sabato's current Maine Senate rating. Any individual poll showing a Republican ahead outside NH, VT, ME and NH Senate, apart from the NYT/Siena Collins +3 poll (Sept 15–22, from the Press Herald snippet). A race-by-race check of the remaining races.

YES means: Republican nominees win exactly 2 of the 27 Senate and governor general elections in the 19 Harris states. My argument is for NO. The best NO paths are a count of 3 or more (Collins and/or Oregon's Drazan adding to Scott and Ayotte), or a count of 1 or fewer (Scott losing). - [2026-10-15] Maine Senate is close to a coin flip, and the earlier colleague reports lacked polling. The Suffolk poll (Oct 8–11, likely voters) has Jackson 49, Collins 47. Fox says the poll was "statistically tied". The CBS/YouGov poll (reported Oct 2) has the race tied. Collins winning makes the count 3 or more if Scott and Ayotte also win. https://www.foxnews.com/politics/collins-insists-socialist-rival-wont-beat-her-maines-money-machine-youll-lose-big-time - [2026-10-09] Polling spread in Maine: Washington Post/Schar (Sept 30–Oct 5) has Jackson +4 (50–46). The FiftyPlusOne average is only Jackson +2. The NYT/Siena poll (Sept 15–22) had Collins ahead 49–46. Marist (Oct 1–4, registered voters) has Jackson +4. The RCP average is about Jackson +1. All of these are inside the margins of error. https://www.pressherald.com/2026/10/09/another-polls-shows-troy-jackson-leading-a-tight-maine-senate-race/ and https://www.latintimes.com/troy-jackson-holds-narrow-lead-over-collins-history-money-could-change-600083 - [2026-10-09] Maine mechanisms favoring Collins: 55% of Post respondents want Democrats to control the Senate, yet Collins is within 4 points, so she is outrunning the national environment. She holds a 24-point edge on bringing federal money to Maine. Jackson has 13% of voters with no opinion of him, which leaves room for Republican ads. Republicans have a large funding advantage. https://www.pressherald.com/2026/10/09/another-polls-shows-troy-jackson-leading-a-tight-maine-senate-race/ and https://maristpoll.marist.edu/polls/midterm-elections-in-maine-october-2026/ - [2026-10-10] A new Oregon governor's race is a live extra Republican path (not in the earlier reports' detail). The Pollsmax average is Drazan +0.4 (44.7–44.3, 7 polls). Three earlier polls had Drazan up 4, 2 and 1. Two newer polls (Oct 1–4 and Sept 24–Oct 1) have Kotek up 2 and 4. OPB notes that the 2022 polling also favored Drazan until it flipped near Election Day, and Kotek won by 3.5. Kotek is 36% favorable and 60% unfavorable. A Drazan win would take the count to 3 or more, or keep it at 2 if Scott or Ayotte lost. https://www.opb.org/article/2026/10/08/new-polls-kotek-may-lead/ and https://www.pollsmax.com/governor/oregon/ - [2026-10-11] Scott's race is more volatile than "Likely R" suggests. The UNH poll had Janoo +6 (49–43). Vermont Public had Scott +10 (42–32 with 20% undecided). State Navigate has Scott +3 to +5. The Boston Globe reports that fewer than half of Vermonters approve of Scott for the first time. A Scott loss would put the count at 1 or fewer unless Collins or Drazan win. https://www.bostonglobe.com/2026/10/11/metro/vermont-governor-phil-scott-amanda-jano/ and https://vtdigger.org/2026/09/28/new-poll-shows-gov-phil-scott-leading-amanda-janoo-by-10-points/ - [2026-10-11] Maine governor is not a Republican path. Pingree leads Charles by about 11.7 points in the Pollsmax average (14 polls). Suffolk has her up 49–38. Independent Rick Bennett splits the vote. This race is not a source of upside variance. https://www.pollsmax.com/governor/maine/ and https://pollingsource.com/governors/ME - [2026-10-16] There are two main routes to a count other than 2. One is the upside route: Collins wins, or Drazan wins, or both. Together these look roughly like a coin flip each, and either makes 3 if both governors hold. The other is the downside route: Scott loses, with Ayotte and Scott not both holding. Exactly 2 needs a narrow set of outcomes. It needs both governors to hold with Collins and Drazan both losing. Alternatively, it needs one governor to fall with exactly one of Collins or Drazan winning. That is more fragile than the "modal outcome" framing suggests, because the count is sensitive to correlated, near-50% races. - [2026-10-14] Correlation point: a Republican-leaning polling miss helps Collins, Drazan and Scott together, which pushes the count to 3 or 4. A Democratic wave sinks Collins and Drazan but also threatens Scott, which pushes the count toward 1 or 2. Only a narrow band of outcomes gives exactly 2. The Sabato note that NH Senate moved to Likely D does not remove the tail where Sununu wins in a Republican-miss scenario. - [2026-10-16] Resolution technicality: only a Republican Party nominee counts. Maine's Senate race uses ranked-choice voting, so the winner is decided by the RCV tabulation. Maine's governor race is plurality. A count that is close in Maine may not settle quickly. The market closes Dec 15, so there is time to settle it. https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Maine BOTTOM LINE: Exactly 2 requires several near-coin-flip races to break in a narrow pattern, and it has to avoid both the 3+ outcomes (Collins and/or Drazan win) and the 1-or-fewer outcomes (Scott loses). Maine Senate and Oregon governor are both polling inside the margin of error, which keeps the count at 3 or more well within reach. NOT FOUND: Current Cook or Sabato ratings for Oregon governor and Maine Senate beyond the earlier reports. Any poll of the Colorado, New Mexico, Minnesota or Connecticut races. A fetched copy of the Fox, Marist or Pollsmax pages; those figures come from search snippets.