Will the 25th Amendment be used during Trump's Presidency?

**Stage 1 — Blind analysis (ignore market prices):**

- The question hinges on semantics: *“used”* can mean the narrow, routine invocation of **Section 3** (voluntary, temporary transfer of power for medical procedures) or the far more dramatic, rarely attempted **Section 4** (involuntary declaration of inability by the VP and a majority of the cabinet). The provided context states that Section 3 was invoked during Trump's earlier presidency (2017 and 2020) for routine medical transfers. If the event counts any Section use across any of Trump’s presidencies, the answer is already a factual Yes. But the market framing and the event end date (2029-01-20) indicate the likely intended horizon is the 2025–2029 term — so I evaluate the probability that at least one section (most likely Section 3) will be used during that term.

- Historical and institutional patterns strongly favor at least one Section 3 usage in a four-year presidency. Presidents routinely undergo medical procedures that involve anesthesia or temporary incapacity (colonoscopies, minor surgeries, diagnostic procedures). Modern practice has been to use Section 3 to transfer power explicitly and avoid ambiguity. Given the age of the incoming president and the multi-year exposure window (four years), the baseline chance that a president voluntarily transfers power temporarily at least once is materially above coinflip. I estimate the chance of at least one Section 3 use during a four-year term in this demographic and political environment roughly in the 60–85% band, and I place it at 70% in the center of that range.

- Section 4 is qualitatively different. It requires the VP and a majority of cabinet officers to declare the president unable to discharge the duties of office — a politically explosive, institutionally fraught process that has never resulted in a sustained removal and faces enormous partisan, legal, and practical obstacles. The probability of Section 4 being invoked during a single four-year presidency, absent catastrophic medical incapacity or a very narrow, specific crisis (e.g., prolonged incapacitation where the president is incapable and the administration cannot credibly manage transfer), is low — I estimate single-digit to low-teens percent. I place it ~10% as an upper bound for this scenario.

- Combining the nearly-certain-ish Section 3 risk with the low Section 4 risk gives a composite probability that *some* form of the 25th Amendment is used during the 2025–2029 term: roughly 72% (dominated by Section 3 usage). That is my independent assessment.

**Stage 2 — Market calibration (now look at market prices):**

- Current market pricing: Yes 27% / No 73%. This is materially lower than my independent assessment (72%). There are plausible reasons for the gap: - *Semantic mismatch:* Many traders are almost certainly pricing only the rare, dramatic Section 4 invocation (involuntary removal). If the market's implied question is “Will Section 4 be used?” then a 27% price would still be high relative to my ~10% estimate for Section 4 alone — suggesting the market may be overpricing Section 4 risk or blending probabilities unequally. Conversely, if the market intends to count Section 3 uses, the 27% price is a deep underprice relative to the high likelihood of routine Section 3 transfers. - *Confusion and framing:* The event description and historical note create ambiguity. Some participants may ignore routine medical transfers as not being newsworthy uses of the Amendment, or expect the market to require an extraordinary use. Ambiguity generates dispersion and can depress the Yes price when buyers and sellers assume different definitions. - *Adverse selection and liquidity:* The event has substantial volume (141k contracts) but market participants with institutional views on Section 4 may be providing liquidity, keeping Yes priced low. Retail or less informed traders who would buy Yes anticipating a routine Section 3 transfer may be under-participating.

- Trading implication: If the market truly resolves on any use of the amendment (including Section 3), the market is mispriced and offers a clear buying opportunity on Yes. If the market is effectively a bet on Section 4 only, then the market may still be slightly optimistic on Yes (27% vs my ~10% Section 4 estimate). The ambiguity of contract language is the primary contributor to the divergence.

**Conclusion:** My independent probability that the 25th Amendment will be used at least once during Trump's 2025–2029 presidency is **72%**, driven overwhelmingly by the high likelihood of a voluntary Section 3 transfer for routine medical incapacity at least once during a four-year term. The current market price (~27% Yes) appears to reflect either a narrower reading (Section 4 only) or confusion / under-valuation of routine Section 3 risk; either way it is materially below my independent assessment.