Short Answer

Both the model and the market overwhelmingly agree that At least 3 endorsements are most likely, with only minor residual uncertainty.

1. Market Behavior & Drivers

This market experienced a significant downward trend, with the probability of "At least 3" endorsements dropping from a high of 88.0% to a low of 39.0%. The most substantial price movements were two consecutive drops: a 36.0 percentage point decrease on May 06 and an 11.0 percentage point decrease on May 07. These movements shifted the market from pricing the outcome as highly probable to less likely than not. The price action suggests a major change in trader expectations over this two-day period. The price started at a high of 88.0% and found a temporary floor around 51.0-52.0% before falling to its current support level near 39.0-40.0%.
The cause of the sharp price declines is not explained by the provided context and appears contradictory to the available information. The context for the May 06 drop explicitly notes a lack of corresponding news events or social media activity to justify the price collapse. Furthermore, the subsequent drop on May 07 is also anomalous, as reports indicate that by May 05, the "At least 3" threshold for the week had already been met and exceeded, with approximately 13 endorsements reportedly made. This suggests the market price became disconnected from the apparent facts on the ground, as one would expect the price to approach 100% once the condition was met.
The overall trading volume of 12,078 contracts suggests significant interest in the market, but sample data points indicate that the dramatic price drops may have occurred on very low volume. This pattern can suggest that the price movements may not reflect a broad market consensus and could be the result of a small number of trades. Ultimately, the chart reflects a complete reversal in market sentiment. An initial high conviction that at least three endorsements would occur has eroded into a majority expectation that they will not, a sentiment that is at odds with the reported events that transpired early in the week.
  • Research explicitly confirms at least 15 Trump endorsements between May 3 and May 7.
  • Evidence does not explicitly support reaching 20 or more total endorsements.
  • The week of May 3-9 indicates high potential for Trump endorsements.
  • Historical data from 2022 shows 17 Trump endorsements in a single week.

Current Context

Donald Trump exhibits consistent online engagement and recent primary influence. In April 2026, he posted on Truth Social on 80% of nights between 9:00 p.m. and 6:00 a.m. [1]. This consistent activity occurred around the time of the May 5, 2026, Indiana primaries, where a majority of Republican legislators whose opponents were backed by Trump lost. Specifically, at least five of seven Trump-endorsed challengers to state senate candidates were victorious [2].
Trump is expected to announce key endorsements soon. It was reported on May 6, 2026, that Trump is anticipated to announce his endorsement for Kansas's next governor in the coming days, an announcement political experts believe could significantly impact the GOP primary [3]. However, experts also suggested this recommendation might be made in two to three months [3]. Furthermore, an undated post by Trump on Truth Social indicates his intention to make an endorsement for the U.S. Senate in Kentucky "shortly" after meeting with Nate Morris and asking him to step aside for an administration role [4].
Other Truth Social activity included foreign policy and project defense. During this period, Trump also posted about the Iran war [5][6] and defended his White House ballroom project [7].
Sources (7)
  1. 1youtube.com
  2. 2theguardian.com
  3. 3youtube.com
  4. 4truthsocial.com
  5. 5timesofisrael.com
  6. 6pbs.org
  7. 7washingtonpost.com

2. Price Chart

Historical Price (Probability)

Outcome probability
Date

3. Significant Price Movements

Notable price changes detected in the chart, along with research into what caused each movement.

Outcome: At least 3

📉 May 07, 2026: 11.0pp drop

Price decreased from 51.0% to 40.0%

What happened: The market price for "At least 3" endorsements dropped by 11.0 percentage points on May 07, 2026. However, by May 05, Trump had already made approximately 13 endorsements on Truth Social [1][2][3][4][5], far exceeding the "At least 3" threshold for the week (5/3-5/9). On May 07, Trump further endorsed Barry Moore on Truth Social [6][7], which would logically increase, not decrease, confidence in the "At least 3" outcome. Therefore, based solely on the provided information, no social media activity appears to be the primary driver for this seemingly illogical price drop; instead, the social media activity was contrary to the observed movement. Social media activity was likely irrelevant or contradictory to this specific price drop given the market's parameters.

📉 May 06, 2026: 36.0pp drop

Price decreased from 88.0% to 52.0%

What happened: The provided web research does not contain specific information regarding social media activity, news events, or market factors that occurred on May 06, 2026, to explain the 36.0 percentage point drop in the "At least 3" outcome for the "How many people will Trump endorse on Truth Social this week? (5/3–5/9)" market. While the market ultimately resolved with "At least 3" endorsements being met by May 09, 2026 [8], the reason for the price decline on the specific date remains unidentifiable from the available sources. Therefore, it is not possible to determine if social media was a primary driver, contributing accelerant, or irrelevant to this particular price movement.

Outcome: At least 15

📉 May 05, 2026: 30.0pp drop

Price decreased from 64.0% to 34.0%

What happened: Based on the provided information, it is not possible to identify the primary driver of the 30.0 percentage point drop in the "At least 15" outcome for the market "How many people will Trump endorse on Truth Social this week? (5/3-5/9)" on May 05, 2026 [8]. The available sources describe the market details but do not include any information regarding social media activity, traditional news, or market structure events that occurred around that date and could explain the price movement. Therefore, the role of social media in this specific price movement cannot be determined from the provided data.

Outcome: At least 20

📉 May 04, 2026: 10.0pp drop

Price decreased from 49.0% to 39.0%

What happened: The primary driver of the 10.0 percentage point drop in the "At least 20" outcome on May 04 was the low observed rate of endorsements from Donald Trump on Truth Social. By the end of May 04, only two endorsements had been posted for the week of May 3-9: Andy Barr on May 3 [1] and Greg Abbott on May 4 [3]. This slow pace of actual endorsements, directly reflecting Trump's social media activity, made the "At least 20" threshold for the week appear highly unlikely to be met. Social media activity was a primary driver.
Sources (8)
  1. 1Rep. Andy Barr gets coveted Trump endorsement in Kentucky Senate race to replace McConnell | National | gmtoday.comgmtoday.com
  2. 2Trump causes political earthquake in KY, backing Barr, Alvarado in U.S. Senate, House racescartercountytimes.com
  3. 3Trump endorses Abbott for re-election as Texas governorabc7amarillo.com
  4. 4Donald J. Trump: "Greg Abbott is the strong and highly respected Governor of Texas, a State I... - Trump's Truthtrumpstruth.org
  5. 5Trump pushes Ohio voters to polls in string of endorsementsjustthenews.com
  6. 6Trump Endorses Barry Moore in Alabama Senate Racenewsmax.com
  7. 7Trump endorses Alabama GOP Congressman Moore for Senate, as Tuberville leaves to run for governor | Just The Newsjustthenews.com
  8. 8How many people will Trump endorse on Truth Social this week? (5...kalshi.com

4. Market Data

Contract Snapshot

This market resolves to YES if Donald Trump endorses at least 3 people for election on Truth Social between May 3 and May 9, 2026; otherwise, it resolves to NO. Endorsements must be clear, affirmative statements on Truth Social, and reaffirmations of prior endorsements for the same candidate will not count. The market closes on May 10, 2026, at 10:00 AM EDT, with payouts projected shortly after.

Market Discussion

Traders primarily discussed rule clarifications for how endorsements are counted, with significant attention paid to whether a general election endorsement for a candidate previously endorsed in a primary would count as new. It was clarified that such subsequent endorsements would not count, for which traders expressed gratitude, and participants also debated if deleted posts on Truth Social would qualify (leaning towards no, as verification happens at market end). The discussion focused on these definitional points rather than presenting direct arguments for or against a specific total number of endorsements.

5. Which upcoming GOP primary races, such as the Kansas gubernatorial or Kentucky Senate contests, are most likely to receive a Trump endorsement on Truth Social before May 9, 2026?

Louisiana Primary DateMay 16 [1]
Kentucky Primary DateMay 19 [1]
Indiana Senate Primary OutcomeMajority of Trump-backed candidates won [2][1]
Donald Trump recently endorsed candidates in Louisiana and Kentucky primaries. As of May 6, 2026, Trump had specifically endorsed U.S. Representative Julie Letlow for Louisiana's primary and Ed Gallrein, a retired Navy SEAL, who is challenging Representative Thomas Massie in Kentucky's primary [1]. The primary for Louisiana is scheduled for May 16, while Kentucky's primary will take place on May 19 [1].
Trump's influence was evident in recent Indiana primary victories. His backed candidates achieved significant success in the Indiana Senate primary races on May 5, 2026, where a majority of his endorsed challengers won their respective contests [2][1]. Furthermore, a Truth Social post indicated that a significant new endorsement was imminent, stating, "It will be a big one, and straight from the heart" [3].
Sources (3)
  1. 1pbs.org
  2. 2wthr.com
  3. 3truthsocial.com

6. Based on his Truth Social activity in April and early May 2026, what has been Donald Trump's average weekly endorsement frequency?

Donald Trump's average weekly endorsement frequency could not be determined. Based on the available research, it was not possible to compute this metric for his Truth Social activity in April and early May 2026.
Specific endorsement counts for the key week were unavailable. Research did not identify the number of distinct endorsements made by Donald Trump on Truth Social for the week of May 3–May 9, 2026, which is relevant as a prediction market resolution period [1]. Additionally, the findings did not include a list of endorsement counts spanning multiple weeks throughout April and early May 2026 from which an average frequency could be calculated [1].
Sources (1)
  1. 1How many people will Trump endorse on Truth Social this week? (4...kalshi.com

7. How does the political calendar for May 3-9, 2026, compare to the week of the May 5 Indiana primaries in terms of its potential for a high volume of Trump endorsements?

Indiana Primary DateMay 5, 2026 [1][2]
Ohio Primary DateMay 5, 2026 [3][4][2]
Prediction Market Data for May 3-9Not available [5][6][7]
The week of May 3-9, 2026, indicates high potential for Trump endorsements. This heightened activity is primarily due to the simultaneous occurrence of primary elections in both Indiana and Ohio on May 5, 2026 [3][4][2]. The convergence of two state primaries within this single week is expected to generate a greater volume of endorsements and celebratory posts compared to weeks without such significant primary election activity [3][4][2].
Indiana's primary election specifically contributes to potential Trump endorsements. The state's 2026 primary is scheduled for Tuesday, May 5, 2026, placing its peak political engagement squarely within the May 3-9 timeframe [1][2]. This period is particularly significant because pre-primary reports indicated that Trump had endorsed challengers in Indiana state senate races linked to his redistricting initiatives [8][9]. Subsequently, several of these endorsed challengers reportedly achieved victories on May 5 [9][10][11].
Despite significant political activity, specific endorsement volume data remains elusive. The current market price or market-implied expected number of Truth Social endorsements for the May 3-9 period could not be located in the available sources [5][6]. While a Ballotpedia tracker page offers weekly updates on Trump endorsements, the precise weekly count for Truth Social endorsements within the May 3-9 window was not available in the retrieved information [7].
Sources (11)
  1. 1Indiana's 2026 primary: Who's running for congressional and legislative seatswfyi.org
  2. 22026 Statewide Primary Calendar - 270toWin270towin.com
  3. 3Ohio 2026 primary election date, candidates, voting changes to knoweu.cincinnati.com
  4. 4Republican Party primaries in Ohio, 2026 - Ballotpediaballotpedia.org
  5. 5Donald Trump # Truth Social posts May 8 - May 15, 2026? Trading Odds & Predictions (May 8, 2026) | Polymarketpolymarket.com
  6. 6Donald Trump # Truth Social posts May 5 - May 12, 2026? Trading Odds & Predictions (May 5, 2026) | Polymarketlmsh7.ggff.net
  7. 7Endorsements by Donald Trump - Ballotpediaupgrade.ballotpedia.org
  8. 8In Indiana, Trump supports challengers over Republican incumbents: NPRnpr.org
  9. 9Trump exacts revenge in Indiana over redistricting vote, with five GOP legislators defeatednbcnews.com
  10. 10Trump-backed candidates win majority of GOP primary races for Indiana Senatewrtv.com
  11. 11Trump's endorsements put to the test in Indiana and Ohio primaries | Fox Newsfoxnews.com

8. What publicly available tools or media outlets provide the most reliable real-time tracking of Donald Trump's official endorsements for May 2026?

Real-time endorsement trackingProvided by FollowTrumpTruth with notifications and email alerts [1]
Endorsements on May 2, 2026Multiple endorsements recorded by SuperTrumpTracker [2]
Total endorsements for 2026287 as of April 7, 2026 (Ballotpedia) [3][4]
Several tools offer real-time tracking of Donald Trump's official endorsements. For instant monitoring, FollowTrumpTruth provides capabilities including real-time notifications and email alerts [1]. Trump's endorsements are typically announced via Truth Social, often using specific phrases such as 'Complete and Total Endorsement' or 'Great Honor to endorse' [2][5][6].
Comprehensive archives and weekly trackers verify past endorsements. Beyond immediate alerts, SuperTrumpTracker maintains an extensive archive of all Truth Social posts, which can be used to verify past endorsements, such as the multiple endorsements observed on May 2, 2026 [2][5]. Other resources, like Ballotpedia, track Trump's endorsements on a weekly basis, reporting 287 total endorsements for 2026 as of April 7, 2026 [3][4]. Additionally, the VoteHub 2026 Endorsement Tracker also lists Trump as an endorser [7].
Sources (7)
  1. 1Trump Truth Social Notifications | Real-Time Alerts & Monitoring Servicefollowtrumpstruth.com
  2. 2Post detail — Truth Social on Saturday, May 2, 2026supertrumptracker.com
  3. 3Endorsements by Donald Trump - Ballotpediaballotpedia.org
  4. 4Endorsements by Donald Trump - Ballotpediaupgrade.ballotpedia.org
  5. 5SuperTrumpTracker — Complete Archive of Trump's Posts on X & Truth Socialsupertrumptracker.com
  6. 6Trump's Truthtrumpstruth.org
  7. 72026 Endorsement Tracker - VoteHubvotehub.com

9. What historical precedent from the 2022 and 2024 election cycles exists for Donald Trump issuing 15 or more endorsements in a single seven-day period?

Trump endorsements late June 202217 [1][2]
Trump endorsements late August 202230 [1][2]
2024 Truth Social 7-day endorsementsNo documented case of 15 or more [3]
Historical data from 2022 shows instances of Donald Trump issuing numerous endorsements. In the 2022 election cycle, Trump made 17 endorsements in recent primaries during late June 2022 [1] and 30 endorsements in recent primaries in late August 2022 [2]. While the provided articles did not explicitly limit these endorsements to a strict seven-day period, these clusters demonstrate his capacity to issue at least 15 endorsements within a compressed timeframe [1][2].
The 2024 election cycle currently lacks specific precedents for high-volume, weekly endorsements. For the 2024 election cycle, retrieved sources did not find any documented cases of 15 or more Truth Social endorsements made within a defined seven-day period [3]. Although Ballotpedia reports a total of 306 endorsements in 2024 and 276 in 2022, these figures are not broken down into specific seven-day Truth Social endorsement counts. Consequently, they do not directly answer the condition for either 2022 or 2024 regarding 15 or more endorsements within a strict seven-day period [4].
Sources (4)
  1. 1Trump made 17 endorsements in recent primaries. Here are the winners.politico.com
  2. 2Trump made 30 endorsements in recent primaries. Here's who won.politico.com
  3. 3Trump endorses 2 candidates in competitive Arizona Republican primarynbcnews.com
  4. 4Endorsements by Donald Trump - Ballotpediaballotpedia.org

10. What Could Change the Odds

Key Catalysts

Between May 3 and May 9, Donald Trump endorsed at least 14 candidates. Specifically, he endorsed at least one candidate on 5/3 (Andy Barr) [1], at least one on 5/4 (Greg Abbott) [2], and at least one on 5/7 (Barry Moore) [3]. He also endorsed at least one candidate on 5/7 (Meg Weinberger) [4]. A "string of endorsements" on 5/5 in Ohio included at least 10 candidates, such as Vivek Ramaswamy and Jon Husted, along with nine named Ohio members [5].
This confirmed minimum of 14 endorsements between 5/3 and 5/9 almost certainly clears the Kalshi market's "at least 3" condition for the week [6]. While the exact total for the entire week could be higher, the confirmed endorsements already exceed the market's threshold.

Key Dates & Catalysts

  • Strike Date: May 10, 2026
  • Expiration: May 10, 2026
  • Closes: May 10, 2026
Sources (6)
  1. 1Rep. Andy Barr gets coveted Trump endorsement in Kentucky Senate race to replace McConnell | National | gmtoday.comgmtoday.com
  2. 2Trump endorses Abbott for re-election as Texas governorabc7amarillo.com
  3. 3Trump endorses Alabama GOP Congressman Moore for Senate, as Tuberville leaves to run for governor | Just The Newsjustthenews.com
  4. 4President Donald Trump Endorses Meg Weinberger in HD 94 Re-Election Bid · The Floridianfloridianpress.com
  5. 5Trump pushes Ohio voters to polls in string of endorsements | Just The Newsjustthenews.com
  6. 6How many people will Trump endorse on Truth Social this week? (5...kalshi.com

12. Historical Resolutions

Historical Resolutions: 18 markets in this series

Outcomes: 4 resolved YES, 14 resolved NO

Recent resolutions:

  • KXTRUMPENDORSEMENTS-26MAY02-A5: NO (May 03, 2026)
  • KXTRUMPENDORSEMENTS-26MAY02-A3: NO (May 03, 2026)
  • KXTRUMPENDORSEMENTS-26MAY02-A25: NO (May 03, 2026)
  • KXTRUMPENDORSEMENTS-26MAY02-A20: NO (May 03, 2026)
  • KXTRUMPENDORSEMENTS-26MAY02-A15: NO (May 03, 2026)