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What state will be first in the Democratic presidential primary? — South Carolina

KXFIRSTPRIMARYD-28-SC · Elections · 2026-08-05
88%
Agent
92%
Market Price
-4.5%
Edge
medium
Confidence
Volume: 16,738
Spread: 6.9c
Days to resolution: 825
Markets in event: 12
Final Rationale
The 2026-07-24 RBC vote placing South Carolina first, with full DNC ratification in August 2026 widely treated as procedural, plus Iowa's exclusion, Southern-state backing, and stiffened penalties for rogue contests, make SC the clear favorite — consistent with the 94.10% Kalshi anchor. However, the critique is correct that both forecasters underweight a confirmed base-rate event: New Hampshire actually did hold an unsanctioned primary ahead of SC in 2024, its RSA 653:9 mandate remains in force, and officials have explicitly reaffirmed intent to go first regardless. The unresolved rules ambiguity (sanctioned lead-off vs. first chronological contest) means a repeat NH defiance could plausibly flip resolution, and the anchor itself is thin (~620 contracts, 11 data points) after a 66-point jump, warranting wider bands. Offsetting this, the market's 94% pricing amid publicly known NH threats suggests participants read the rules as tracking the DNC-sanctioned calendar, and the 2+ year horizon adds modest but non-trivial two-sided risk. I settle marginally below both prior forecasts at 88% Yes.
Price vs. prediction
How the market moved after the agent's call. Solid blue line is the actual market price; dashed line is the agent's static forecast at $t{=}0$.
$n = 29$ follow-ups
1. Planner Opus · Fermi decomposition + tool plan
Tools chosen: kalshi_direct kalshi_related polymarket_related claude_news gdelt_news wikipedia code_execution
Sub-questions (Fermi decomposition)
  1. What has the DNC Rules and Bylaws Committee decided or signaled so far about the 2028 early-state primary calendar order, and what is the timeline for a final decision?
  2. Is South Carolina explicitly favored to retain the first slot, or are Iowa/New Hampshire/Nevada/Michigan/other states actively lobbying to displace it?
  3. Does New Hampshire state law (RSA 653:9) still mandate a first-in-the-nation primary, and would an unsanctioned NH primary held before SC count as 'first' under this market's resolution?
  4. How did the 2024 cycle resolve in practice (NH held an unsanctioned primary Jan 23, 2024 before SC's Feb 3 sanctioned primary) and what does that precedent imply?
  5. What do the prices of the sibling Kalshi markets (NH, IA, SC, NV, MI, etc.) in KXFIRSTPRIMARYD-28 imply after normalization/de-vigging?
  6. How much do new DNC leadership (Chair Ken Martin) statements and post-2024 recriminations about the SC-first calendar change the odds?
Planner reasoning
This is a Kalshi market on the DNC's 2028 primary calendar, so the market price plus sibling-state markets (which must sum to ~1) are the main anchors. The substantive drivers are the DNC Rules & Bylaws Committee's 2028 calendar process, whether New Hampshire's first-in-the-nation state law again produces an earlier (possibly unsanctioned) primary, and whether South Carolina keeps the lead-off slot it got in 2024.
2. Research Parallel tool calls
ToolStatusTimeItemsSummary
kalshi_direct OK 0.2s 1 ## This Market's Kalshi Data **South Carolina** (KXFIRSTPRIMARYD-28-SC) - Current price (probability): 94.10% - 7-day price change: +66.10% - 30-day price change: +66.10% - Average daily volume: 620 contracts - Price range: 17.00% - 96.00% - Data points: 11 days
kalshi_related OK 3.6s 2 2 related markets / summaries. series KXFIRSTPRIMARYD: 0 markets (skipped 12 no-signal) | keyword 'first primary 2028': ok | keyword 'Democratic primary calendar': ok
polymarket_related OK 3.6s 0 Scanned 100 active Polymarket markets, kept 0 matches. keyword 'first Democratic primary 2028': 0 markets | keyword 'primary calendar': 0 markets | keyword 'New Hampshire primary': 0 markets
claude_news OK 25.4s 10 ## Key Findings - **RBC recommends South Carolina first (July 24, 2026):** The DNC's Rules and Bylaws Committee voted to keep South Carolina first, followed by Nevada on February 1, New Hampshire on February 8, New Mexico on February 15, Michigan on February 22 and Virginia on February 29 , with S
gdelt_news OK 101.2s 30 GDELT: 30 articles across 3 queries (lookback=180d). 'DNC 2028 primary calendar South Carolina first': 10 hits | 'New Hampshire first in the nation primary 2028': 10 hits | 'Rules and Bylaws Committee early state calendar': 10 hits
wikipedia OK 3.6s 4 Fetched 4 Wikipedia entries (1 missing pages).
code_execution OK 37.7s 0 **Note on data availability:** No live Kalshi order-book prices for KXFIRSTPRIMARYD-28 were supplied/retrievable (sandboxed, no internet), so the figures below use an **illustrative representative price set** (South Carolina 72¢, New Hampshire 15¢, Nevada 5¢, Georgia 4¢, New Jersey 2¢, Other/Field 2
3. Evidence Brief Sonnet · 6976 chars
# Current state The DNC Rules and Bylaws Committee (RBC) voted 2026-07-24 to recommend South Carolina as the first 2028 Democratic primary state, followed by Nevada (Feb 1), New Hampshire (Feb 8), New Mexico (Feb 15), Michigan (Feb 22), Virginia (Feb 29), with Super Tuesday March 7, 2028 (CNN, NOTUS). Final ratification by the full DNC is still pending, expected at the August 2026 Austin meeting — a formality most observers expect to pass. New Hampshire, however, is again signaling it may defy the calendar and hold an unsanctioned first primary (as in 2024), which creates residual uncertainty about whether SC is actually first "on the calendar date," even though it is the DNC-sanctioned lead-off state. # Timeline of key events - 2024-01-23 (confirmed): NH held an unsanctioned Democratic primary before SC's sanctioned Feb 3, 2024 contest — precedent for potential 2028 defiance. - 2026-05-26/29 (confirmed): Iowa and NH Democrats separately lobby DNC for early-state slots; 5 Southern state chairs publicly back SC staying first (WLTX, KCCI, WMUR). - 2026-06-26 (confirmed): DNC Rules and Bylaws Committee votes to stiffen penalties for states/candidates participating in unsanctioned early contests (democrats.org). - 2026-07-22 (confirmed): DNC set to vote on nominating calendar (WMUR). - 2026-07-24 (confirmed): RBC votes to place South Carolina first, Nevada 2nd, NH 3rd; Iowa excluded entirely from early window (CNN, Ballotpedia, WMUR). - 2026-07-25 (confirmed): New Mexico approved into early window (Yahoo/ABQ Journal/KOB). - 2026-07-28 (reported): NH Democrats vow candidates will still campaign in-state; possible defiance signaled ("nobody scared of Ken Martin" — Fox News/CNN reporter). - 2026-08 (pending/scheduled): Full DNC membership expected to formally ratify calendar at Austin meeting — final procedural step. # Event Will South Carolina be the first state to hold a Democratic presidential primary/caucus in the 2028 cycle? # Outcomes to forecast - Yes (South Carolina is first) - No (some other state is first) # Kalshi market anchor KXFIRSTPRIMARYD-28-SC current YES price: **94.10%**, up +66.10 points over both 7-day and 30-day windows (from a low of 17% to a high of 96%), reflecting the market's reaction to the 2026-07-24 RBC vote. Average daily volume ~620 contracts over 11 data points — thin but directionally decisive move. # Sub-question answers 1. **DNC RBC decision/timeline** — RBC voted 2026-07-24 to recommend SC first, NV 2nd, NH 3rd, NM 4th, MI 5th, VA 6th, Super Tuesday 3/7/28; full DNC ratification expected August 2026 in Austin (CNN, NOTUS, Washington Examiner). 2. **Is SC favored / who's lobbying** — SC is favored and won a close RBC vote over Nevada; 5 Southern Democratic chairs backed SC; Iowa and NH lobbied but Iowa was shut out entirely (not in top 6), NH placed 3rd not 1st (WLTX, Ballotpedia). 3. **NH RSA 653:9 / unsanctioned primary risk** — NH law still mandates first-in-nation primary; NH officials (Scanlan) have said NH "will hold first primary regardless of what DNC decides" (WMUR, 2026-05-29); reporting suggests NH may again go rogue. Whether an unsanctioned NH primary before SC's counts as "first" for this market's resolution is unclear/unstated in rules — a key ambiguity. 4. **2024 precedent** — NH held an unsanctioned primary Jan 23, 2024, before SC's sanctioned Feb 3, 2024 primary; DNC did not seat NH delegates initially but NH's contest still occurred chronologically first. This is a direct precedent for a repeat scenario in 2028. 5. **Sibling market pricing** — KXFIRSTPRIMARYD-28-SC at 94.10%; separate (differently defined) KXDEMFIRSTCONTEST-28-IA "vote first" market at only 13% (up from 10%). No NH-specific sibling price was retrieved in this research pass (kalshi_related returned only IA and SC-primary-winner markets). The code_execution de-vig analysis used illustrative/simulated numbers only — not real market data — and should not be relied upon for magnitude. 6. **Ken Martin / DNC leadership stance** — Martin has emphasized fairness/"battle-testing" candidates rather than defending SC specifically, but DNC under his leadership pushed through stiffened penalties (2026-06-26) for rogue early contests, aiming to deter a repeat of 2024's NH defiance (democrats.org, NOTUS). # Key facts (high-confidence, factual) 1. [CNN, NOTUS] RBC voted 2026-07-24 for SC-NV-NH-NM-MI-VA order; SC first. 2. [Ballotpedia] Iowa excluded from early window entirely; 12 states applied, 6 selected. 3. [democrats.org] DNC stiffened penalties for unsanctioned 2028 contests (2026-06-26). 4. [WMUR] NH officials reaffirm intent to hold first primary "regardless" of DNC decision. 5. [Wikipedia] 2024: NH ran unsanctioned primary Jan 23, 2024, ahead of SC's sanctioned Feb 3 primary. 6. [Kalshi] SC contract jumped from 17% to 94.10% following the July 24 RBC vote. # Cross-market signals - Kalshi related: KXDEMFIRSTCONTEST-28-IA (differently scoped "vote first" market) at 13%, up slightly — consistent with Iowa being a non-factor for "first." - Polymarket: No matching markets found (0 results across 3 keyword searches). - Sportsbook implied: None available. # Analyst opinions and speculation - CNN reporter (per Fox News) suggests "nobody is scared" of Chair Ken Martin, implying real risk NH defies calendar again. - Iowa Democrats (per Fort Mill Sun) leave door open to defiance but plan to wait until after 2026 midterms — lower near-term risk to SC but a longer-tail unknown. - Most outlets frame full DNC ratification as a formality given precedent and RBC's decisive recommendation (NPR, ABC News). # Directional lean per outcome - **Yes (SC first)**: Strongly supported — RBC recommendation, penalty deterrents, Southern-state political backing, market pricing at 94%. Opposing: NH legal mandate + explicit threats to go rogue, direct 2024 precedent of NH voting before SC despite being unsanctioned. - **No (other state first)**: Only plausible route is an NH unsanctioned primary before SC's date, mirroring 2024. Chronological "first" could then differ from DNC-sanctioned "first," creating resolution ambiguity this market must resolve using its own rules (unspecified in provided text). # Gaps / unknowns - No explicit market rule defining whether "first" means DNC-sanctioned schedule position or first chronological contest (critical given 2024 NH precedent). - No live sibling NH-specific Kalshi contract price found in this research pass to gauge market's own NH-defiance odds. - Code_execution de-vig figures were simulated/illustrative, not real — cannot be used as calibration. - Full DNC ratification vote (Aug 2026 Austin) outcome not yet confirmed as of research cutoff. # Calibration anchors - Kalshi current YES price (anchor): 94.10%, +66pts over past 7-30 days. - 2024 precedent: unsanctioned NH primary preceded SC's sanctioned primary by ~11 days — a directly analogous risk scenario for 2028 if NH follows through on stated defiance intentions.
4. Forecasters Opus + GPT · in parallel
claude-opus-5
medium
Yes 90%
No 10%
The DNC Rules and Bylaws Committee voted 2026-07-24 to place South Carolina first, with full DNC ratification in August 2026 widely seen as a formality, and Kalshi has repriced from 17% to 94.10% on that news. The main downside risk is New Hampshire's statutory first-in-the-nation mandate and explicit threats to defy the calendar, exactly as it did on 2024-01-23 ahead of SC's Feb 3 sanctioned primary; the DNC's stiffened penalties (2026-06-26) reduce but do not eliminate that risk. Because the market rules do not clearly specify whether 'first' means the DNC-sanctioned lead-off or the first chronological contest, I shade slightly below the 94% anchor to account for both the NH-defiance scenario and the long 2+ year horizon in which calendars can shift. I land at 90% Yes.
gpt-5.5
medium
Yes 88%
No 12%
The Kalshi YES anchor is 94.10%, reflecting the large market move after the DNC RBC voted on 2026-07-24 to recommend South Carolina as the first 2028 Democratic primary state, with full DNC ratification expected to be mostly procedural. The RBC decision, Southern-state backing, Iowa's exclusion, and stiffened DNC penalties all point toward Yes because South Carolina is the official party-backed lead-off state. The main counterweight is New Hampshire: state law and officials continue to insist NH will hold the first primary regardless of the DNC, and in 2024 NH did in fact hold an unsanctioned Democratic primary before South Carolina. Because the market rules provided do not clarify whether an unsanctioned NH contest would count chronologically, I move modestly below the 94% anchor but still keep South Carolina strongly favored.
5. Devil's Advocate Sonnet · red-team critique
1. Both forecasters shade only slightly below the 94.10% Kalshi anchor (to 88-90%) despite citing a *direct, confirmed precedent* (NH actually defied and voted first in 2024) — this actual historical base rate of defiance succeeding is stronger evidence for No than a hypothetical risk, yet neither quantifies it as more than a marginal discount. 2. Neither forecaster grapples with the critical resolution ambiguity flagged in the brief — "market rules do not clearly specify whether 'first' means DNC-sanctioned lead-off or first chronological contest" — beyond a one-line mention; if the market resolves chronologically (as the 2024 precedent suggests it should, since NH's unsanctioned primary is a real, dated event), the No probability could be substantially higher than 6-12%. 3. Both ignore the low-liquidity caveat (~620 contracts/11 data points) explicitly noted in the brief, treating the 94.10% price as a reliable anchor rather than a thin, potentially noisy signal that just had a massive 66-point swing — this warrants wider uncertainty bands, not just a small haircut. 4. Neither forecast considers the long 2+ year horizon risk beyond NH: the brief notes Iowa Democrats are "leaving the door open to defiance" post-midterms, and full DNC ratification, while called a "formality" by most outlets, is not yet confirmed — both treat ratification as near-certain without pricing in scenario where the RBC recommendation is altered or delayed. 5. The two forecasts are nearly identical (0.90 vs 0.88) with almost the same rationale structure, suggesting insufficient independent exploration of tail scenarios (e.g., court challenges to NH's RSA 653:9 mandate, a compromise where NH is granted an earlier "non-binding" contest that still resolves as chronologically first) that could meaningfully shift the distribution.
6. Aggregator Opus · final calibrated forecast
88% (medium confidence)
Yes: 88% No: 12%
The 2026-07-24 RBC vote placing South Carolina first, with full DNC ratification in August 2026 widely treated as procedural, plus Iowa's exclusion, Southern-state backing, and stiffened penalties for rogue contests, make SC the clear favorite — consistent with the 94.10% Kalshi anchor. However, the critique is correct that both forecasters underweight a confirmed base-rate event: New Hampshire actually did hold an unsanctioned primary ahead of SC in 2024, its RSA 653:9 mandate remains in force, and officials have explicitly reaffirmed intent to go first regardless. The unresolved rules ambiguity (sanctioned lead-off vs. first chronological contest) means a repeat NH defiance could plausibly flip resolution, and the anchor itself is thin (~620 contracts, 11 data points) after a 66-point jump, warranting wider bands. Offsetting this, the market's 94% pricing amid publicly known NH threats suggests participants read the rules as tracking the DNC-sanctioned calendar, and the 2+ year horizon adds modest but non-trivial two-sided risk. I settle marginally below both prior forecasts at 88% Yes.
Pipeline Timing
Total pipeline time: 196.0s
Per-tool research timings shown in the Research section above.