Will the Supreme Court overturn gay marriage?
I assign a 20% chance that the Supreme Court will explicitly overturn Obergefell (national marriage equality) by 2029. The risk is real given post-Dobbs precedent-skepticism, but constrained by statutory safeguards, public opinion, and institutional caution.
Analysis
**Stage 1 — Blind analysis (ignore market prices):**
Current legal baseline is clear: Obergefell v. Hodges (2015) establishes a constitutional right to same-sex marriage. The 2022 Dobbs decision demonstrated the current Court's willingness to revisit long-standing substantive due process precedents, creating a credible pathway by which Obergefell could be targeted. Several conservative justices have issued opinions or statements signaling skepticism about modern substantive-due-process jurisprudence, and Justice Thomas has explicitly argued for revisiting a broad range of precedents. For reversal to occur before 2029 two main things must happen: (1) a suitable case must present to the Court that squarely asks it to overrule Obergefell (for instance, a state refusing to recognize out-of-state same-sex marriages or a state law banning recognition where RFMA is interpreted as inapplicable), and (2) five or more justices must be willing to explicitly overrule the precedent.
Balancing factors argue against reversal. The Respect for Marriage Act (RFMA) creates a federal statutory backstop for recognition and federal benefits, reducing the immediate national chaos from an overturn and lowering the political appetite for an explicit judicial reversal. Public support for same-sex marriage has been strong and climbing over the last decade; overtly reversing a widely accepted right would be politically consequential. Additionally, Supreme Court practice traditionally treats some precedents as harder to overturn where reliance interests are deep — and millions of marriages and state laws reflect significant reliance.
Quantitatively, consider rough branches: a nontrivial chance a cert-worthy case arises by 2029 (I estimate ~30–40%), and conditional on a fully litigated, targeted case reaching the Court, the chance five justices would vote to explicitly overrule Obergefell is appreciable but <50% given institutional caution and political backlash — I estimate roughly 50% conditional. Multiplying these gives a baseline near 15–20%. Allowing for uncertainty (composition changes, emergent litigation strategies that avoid an explicit national reversal but substantially weaken Obergefell), I center at **20%** for an explicit overturn by 2029.
**Stage 2 — Market calibration (compare to current market prices):**
Current market prices put Yes at 12% and No at 88% (volume ~90.9k contracts). My independent 20% sits materially above the market-implied 12%. Possible reasons the market price is lower:
- Market participants are anchoring on RFMA and the expectation that Congress' statute plus state-level protections and public opinion make a judicial reversal unlikely to produce meaningful gains for activists or politically palatable outcomes for the Court. - Traders may be treating Obergefell as politically sacrosanct because reversal would provoke intense backlash, believing that the Court will avoid explicit overruling even if it narrows the doctrine. - The market may be underweighting the post-Dobbs signal that a conservative majority has less judicial restraint regarding substantive-due-process precedents. - Liquidity and retail participation patterns can push prices toward complacency in events that are legally complex but politically charged.
Why I believe the market is mispricing (if it is): the market appears to conflate a dramatic nationwide practical rollback with an explicit judicial overruling. RFMA reduces practical consequences but does not eliminate the legal significance of a Supreme Court reversal; a 5–4 opinion overturning Obergefell would be a watershed constitutional change even if RFMA preserves federal recognition. Given the Court's demonstrated willingness to overturn precedent (Dobbs), the historical volatility of cert-grant decisions, and the possibility of a carefully framed case that invites reversal, a 20% independent probability better reflects the combined chance of a certworthy case plus a majority willing to overturn. That said, a difference between 12% and 20% is not enormous — the market does capture many of the protective factors — but I see persistent upside risk to the 'Yes' side relative to current pricing.
Bottom line: The event is a low-to-moderate probability (my 20%) but materially above the market-implied 12%; if you believe the Court will prioritize precedent-stability and political consequences above legal realignment, the market price is reasonable. If you believe Dobbs materially lowered the barrier to overturning substantive-due-process precedents and that litigants will supply a vehicle by 2029, the market is underpricing the risk.
Arguments
For
- The Dobbs decision demonstrated that the current Court majority is willing to overturn major substantive-due-process precedents, making Obergefell a conceivable next target.
- Several conservative justices have expressed doctrinal skepticism about modern substantive due process and related precedents; this philosophical alignment increases the chance of an overruling vote if presented with a clean case.
- A well-crafted case that asks only about the constitutional question of marriage recognition could give the Court procedural cover to issue a direct overruling.
- If the political environment produces state-level litigation (e.g., non-recognition of out-of-state same-sex marriages) litigation will likely percolate to the Supreme Court within the 2026–2029 window.
Against
- The Respect for Marriage Act provides a strong federal statutory backstop that reduces the practical impact of a judicial reversal, lowering political incentives to overturn and reducing the appetite for disturbance.
- Public opinion strongly favors same-sex marriage, creating enormous political and reputational costs for the Court and making justices more cautious about explicit reversal.
- Stare decisis and reliance interests are significant: millions of marriages, state laws, and contractual arrangements depend on Obergefell, which historically raises the threshold for overturning precedent.
- The Court can achieve much of the policy outcomes some justices want through narrower rulings or case-specific holdings that avoid an explicit national overruling, reducing the likelihood of a clean, explicit overturn.
Key drivers
- Supreme Court composition and any retirements/appointments before 2029
- Whether a cert-worthy case that squarely asks the Court to overrule Obergefell reaches SCOTUS
- Institutional respect for stare decisis versus the current majority’s doctrinal approach after Dobbs
- Congressional and statutory protections (Respect for Marriage Act) and state constitutional/legislative safeguards
- Public opinion and political backlash risk that could influence justices' calculations
Risk factors
- A litigant/state crafts a case that allows the Court to address Obergefell directly with clean record
- Further erosion of doctrinal resistance to overturning substantive due process precedents following Dobbs
- A change in Court membership (retirements or new appointments) that increases the numerical appetite to overrule precedent
- Strategic narrow rulings or incremental doctrinal shifts that effectively hollow out Obergefell without a clear explicit statement (harder to hedge)
Scenarios
Best case
For the 'Yes' outcome: A state passes a law or refuses to recognize out-of-state same-sex marriages, a lower court issues a conflicting ruling, and the Supreme Court grants cert on a case that squarely asks the Court to revisit Obergefell. A coalition of five conservative justices votes to explicitly overrule Obergefell, issuing a 5–4 opinion reversing the constitutional right to same-sex marriage. Result: Obergefell is overturned nationwide; RFMA preserves federal recognition for many marriages but leaves state-level recognition and licensing subject to state law, producing a patchwork landscape.
Most likely
The Court avoids an outright, sweeping reversal. Instead, litigants and lower courts press for limits on Obergefell in specific contexts; the Supreme Court either declines to take many of these cases, issues narrow rulings that limit aspects of the doctrine, or reasserts the core holding while leaving some breathing room for states. The practical result through 2029 is continued national recognition under Obergefell and RFMA, but with periodic legal challenges and some incremental chipping at peripheral protections.
Worst case
For the 'No' outcome (i.e., Obergefell remains in force): No certworthy case reaches the Court, or the Court declines to overrule on grounds of stare decisis or national reliance. Alternatively, the Court issues a narrow opinion that reaffirms the core holding of Obergefell or limits any doctrinal change to peripheral issues. RFMA and strong public opinion further entrench protections, and any attempts to erode marriage equality fail politically and legally.
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