Will the filibuster be weakened?
Short Answer
Both the model and the market expect the filibuster to be weakened before January 20, 2029, with no compelling evidence of mispricing.
1. Market Behavior & Drivers
This market has exhibited a pronounced sideways trend with extremely low volatility. The probability of the filibuster being weakened has remained confined within a very narrow 2-percentage-point range, trading between 16.0% and 18.0%. The market opened at 18.0% and is currently trading at the same level, indicating no net change in outlook over the observed period. There have been no significant price spikes or drops to analyze, as the chart reflects a static market. The absence of notable price movement suggests that no new information or events have occurred to meaningfully alter traders' expectations regarding this outcome.
The total trading volume of 734 contracts, coupled with sample data showing periods of zero activity, points to low market participation and conviction. The price has established a clear support level at 16.0% and resistance at 18.0%, effectively capping the market's movement. This tight trading channel suggests a consensus has formed around the low probability of the event. Overall, the market sentiment is stable and pessimistic, consistently pricing the weakening of the filibuster by 2025 as a low-probability event, with little trader interest in betting against this established consensus.
- Democratic leadership aims to weaken the filibuster with a 2024 trifecta.
- Potential reforms include carve-outs for major bills, like voting rights.
- Historical 'nuclear option' rule changes provide precedent for reform efforts.
- Republican leadership is committed to defending current legislative filibuster rules.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Before 2027 | 18.0% | 13.9% | Democratic leadership plans filibuster weakening, contingent on securing a 2024 trifecta. |
| Before 2028 | 29.0% | 22.3% | Democratic leadership plans filibuster weakening, contingent on securing a 2024 trifecta. |
| Before January 20, 2029 | 35.0% | 27.1% | Democratic leadership plans filibuster weakening, contingent on securing a 2024 trifecta. |
2. Price Chart
Historical Price (Probability)
Outcome probability
Date
3. Market Data
Contract Snapshot
A 'Yes' resolution occurs if the U.S. Senate lowers the three-fifths cloture threshold for any legislative action, excluding reconciliation rules, through a change in its rules or precedent before January 20, 2029. If this specific change does not happen by that deadline, the market resolves to 'No'. Outcomes are verified using sources such as the U.S. Senate and Library of Congress.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| Before 2027 | $0.19 | $0.82 | 18% |
| Before 2028 | $0.29 | $0.76 | 29% |
| Before January 20, 2029 | $0.36 | $0.70 | 35% |
Market Discussion
The market discussion primarily revolves around potential triggers for weakening the filibuster, notably prolonged government shutdowns and presidential demands for a "nuclear option." Traders are actively debating the precise interpretation of market rules, questioning if a "talking filibuster" or specific changes to end a shutdown would qualify. While some participants view a "Yes" outcome as a strategic hedge against bets on extended government closures, there is no clear consensus on the likelihood of the filibuster being weakened.
4. Trust Index
Largest single print on KXFBUSTER-26JAN01-27 carried 56% of its $1,201 tape (print is 13d old)
Integrity risk· Large trades
How it adds up
Integrity80% of score81Good
Trade quality20% of score58Caution
Includes the cost to trade: a $1,000 order can't be filled here because the order book is too thin.
Trust score76Good
Weighted blend with hard caps — a critically weak safety pillar, or a severe trading anomaly, caps the total regardless of the rest. Full methodology · About the Trust Index
Trust profile
Integrity4 screens run · 6 don't apply
5. Which Democratic Senators Support Incremental Filibuster Reform?
| Senator Chris Coons' Position | Supports adjusting filibuster for critical voting legislation [1] |
|---|---|
| Senator Mark Warner's Specific Proposals | No specific incremental filibuster reform proposals publicly supported in sources [1] |
| Senator Jeanne Shaheen's Specific Proposals | No specific incremental filibuster reform proposals publicly supported in sources [1] |
Senator Chris Coons supports a filibuster carve-out for voting rights. He has publicly advocated for an incremental reform to the filibuster, specifically a "carve-out" for "critical voting legislation" [1]. This position marks a shift for Senator Coons, who previously opposed filibuster reform but began expressing "second thoughts" by June 2020 [2]. He explicitly proposed this on the Senate floor, indicating that certain bills, such as those related to voting rights, should bypass the traditional 60-vote threshold for cloture [1].
Senators Warner and Shaheen have not publicly backed specific filibuster reforms. The available research does not detail any specific, incremental filibuster reform proposals that have garnered public support from Senators Mark Warner or Jeanne Shaheen. Although these senators are referenced in broader political contexts, such as a joint statement with Senator Coons on an Iran school strike [3], the findings do not link them to public endorsements of particular filibuster reform mechanisms. The research does not show them supporting options like restoring the "talking filibuster," lowering the cloture threshold for the "motion to proceed," or establishing other specific "carve-outs" [1].
Sources (3)
- 1[VIDEO] On Senate floor, Senator Coons comes out in favor of adjusting filibuster to pass critical voting legislationcoons.senate.gov
- 2Chris Coons, outspoken opponent of filibuster reform, has second thoughts | Voxvox.com
- 3[2026-03-09] Shaheen, Schatz, Murray, Reed, Warner, Coons Statement on...foreign.senate.gov
6. What are Democratic candidates' stances on the Senate filibuster?
| Democratic Party Strategy | Prepare to overhaul filibuster for major bills if Senate majority secured in 2024 [1] |
|---|---|
| Sherrod Brown (OH) Stance | Explicitly supports ending the filibuster [2] |
| Jon Tester (MT) Stance | Criticizes dysfunction, may challenge full abolition, especially for abortion rights [3] |
Democratic candidates broadly aim to overhaul the Senate filibuster if they gain a majority. The Democratic Party has a clear strategic objective to reform the Senate filibuster for major legislation should they secure a majority in 2024, with Majority Leader Chuck Schumer having outlined such changes as part of a potential 2025 agenda [1]. Among the incumbent Democratic candidates in key toss-up races, Senator Sherrod Brown of Ohio has unequivocally stated his desire to end the filibuster in the U.S. Senate [2].
Senator Jon Tester holds a complex, potentially divergent, view on the filibuster. While the Montana incumbent has criticized Senate dysfunction and urged action on voting rights legislation, indicating a desire for legislative progress often hindered by current rules, sources suggest he might challenge plans for a complete abolition, particularly regarding specific issues such as abortion rights [3]. His position is considered pivotal for the filibuster's future, highlighting a potential intra-party divergence on the issue [4].
Ruben Gallego and Bob Casey's specific filibuster positions are not explicitly stated in the available research. For the non-incumbent Democratic candidate Ruben Gallego in Arizona, and incumbent Senator Bob Casey in Pennsylvania, the provided web research does not explicitly detail their stated positions on preserving or reforming Senate rules, specifically the filibuster. Although the filibuster was a focus during a debate involving Senator Casey, the sources do not provide his specific stated position [5]. Therefore, based solely on the available information, their individual stances on this procedural matter remain unstated [5].
Sources (5)
- 1Democrats gear up to overhaul the Senate filibuster for major bills if they win in 2024nbcnews.com
- 2Ohio Democrat Sherrod Brown wants to end filibusters in US Senateeu.augustachronicle.com
- 3Tester could challenge Harris’ plan to end filibuster for abortion rights | Semaforsemafor.com
- 4Filibuster’s future could ride on Jon Tester if Montana sends him back to the Senatewashingtonexaminer.com
- 5Bob Casey and Dave McCormick's second Senate debate focused on the filibuster, abortion, climate changeinquirer.com
7. What is Schumer's plan for voting rights and filibuster reform in 2025?
| Primary Q1 2025 Legislation | Voting rights bill, if Democratic trifecta [1] |
|---|---|
| Anticipated Obstacle | Republican filibuster [1] |
| Underlying Strategy | Create exigency for filibuster reform [1] |
If Democrats secure control of the White House and both chambers of Congress in the 2024 election, Senate Majority Leader Chuck Schumer has indicated that comprehensive voting rights legislation would be a primary legislative focus for early 2025 [1]. This type of bill, potentially including measures similar to the "For the People Act" or other democracy reforms, is considered a cornerstone of the Democratic agenda [2]. Schumer has explicitly stated his expectation that such a bill would face a Republican filibuster in the Senate [1].
Senator Schumer's strategy centers on utilizing the anticipated Republican obstruction of a high-priority measure like voting rights as the impetus for advocating filibuster reform [1]. He has publicly indicated that "the first thing they should do is reform the filibuster," clarifying that this reform is conditional on demonstrating its necessity through a Republican blockage of pivotal legislation [1]. Consequently, the strategic prioritization of voting rights legislation serves as a deliberate effort to underscore the procedural obstacle and generate political momentum for modifications to Senate rules [1].
8. How Will Senate Republicans Use the Filibuster in 2025?
| Filibuster Stance | Senate Republican leaders committed to protecting legislative filibuster [1] |
|---|---|
| Calls for Reform | Thune and Cornyn rejected Trump's calls to eliminate or reform filibuster [1] |
| Legislative Impact | Filibuster will impede potential 2025 Democratic trifecta's agenda [1] |
Senate Republican leadership is committed to defending the legislative filibuster. Senators Mitch McConnell, John Thune, and John Cornyn have consistently signaled a strong commitment to preserving the legislative filibuster. They have publicly rejected calls, even from former President Donald Trump, to reform or eliminate the filibuster, emphasizing its importance over specific legislative priorities [1]. For instance, Thune stated that ending the filibuster is "not happening" despite Trump's demands, and Cornyn authored an op-ed prioritizing legislative importance over filibuster reform [2]. This unwavering stance indicates a foundational principle for their legislative strategy.
This commitment ensures significant legislative obstruction for Democrats. Republicans are prepared to use the 60-vote threshold to significantly impede a potential 2025 Democratic trifecta's legislative agenda. This posture leans towards a high degree of legislative obstruction for major Democratic initiatives, as the filibuster would require substantial bipartisan agreement or concessions. While not explicitly termed "total obstruction," the commitment to the filibuster effectively ensures that most partisan Democratic legislation would fail without Republican support, thereby altering the pressure on Democrats to reform the Senate rules. McConnell's past leadership has also been characterized by an ability to stymie legislative progress, leading to criticisms of a "do-nothing Congress" [3]. However, on "must-pass" items like government funding or the debt ceiling, a willingness to negotiate would likely be a pragmatic necessity.
9. When Did Senate Filibuster Rules Change for Nominations?
| Reid Rule Change Date | November 21, 2013 (approximately 10.5 months into 113th Congress) [1] |
|---|---|
| Gorsuch Rule Change Date | April 6, 2017 (approximately 3 months into 115th Congress) [2] |
| Original Cloture Vote Requirement | 60 votes [3] |
Senate rule changes often follow extended legislative impasses. One such instance was the 2013 'Reid rule,' also known as the 'nuclear option,' which altered procedures for executive and most judicial nominations [1]. This change took effect on November 21, 2013, approximately 10 months and 18 days into the 113th United States Congress [1]. The direct catalyst was a series of failed cloture votes on presidential nominations, specifically the unsuccessful motion to invoke cloture on the nomination of Patricia Millett to the U.S. Court of Appeals for the D.C. Circuit [3]. The vote of 57-43 fell short of the then-required 60 votes [3]. Following this, Senate Democrats moved to change the precedent, establishing that only a simple majority of 51 votes would be needed to end debate on most presidential nominations [4].
The 2017 rule change similarly addressed Supreme Court nominations. This procedural shift, termed the 'Gorsuch rule' or 'nuclear option,' occurred on April 6, 2017 [2]. It took place approximately 3 months and 3 days into the 115th United States Congress [2]. The immediate catalyst for this rule modification was the failed cloture vote on the nomination of Neil Gorsuch to be an Associate Justice of the Supreme Court [5]. On April 6, 2017, the motion to invoke cloture on Gorsuch's nomination failed with 55 Senators voting for and 45 against, not meeting the 60-vote threshold [5]. Subsequently, Senate Republicans initiated a change in precedent, allowing Supreme Court nominations to proceed with a simple majority vote [2].
Sources (5)
- 1113th United States Congressen.wikipedia.org
- 2Neil Gorsuch Supreme Court nominationen.wikipedia.org
- 3On the Decision of the Chair PN527: Patricia Ann Millett, of Virginia, to be United States Circuit Judge for the District of Columbia Circuit -- GovTrack.usgovtrack.us
- 4Senate Democrats invoke 'nuclear option' on filibusters - Los Angeles Timesarticles.latimes.com
- 5U.S. Senate: U.S. Senate Roll Call Votes 115th Congress - 1st Sessionsenate.gov
