Keir Starmer faces intense internal Labour Party pressure to resign following the party's heavy losses in recent local elections and a collapse in his personal approval ratings to record lows near minus 45. Multiple cabinet and junior ministers have resigned in protest, including former health secretary Wes Streeting, who announced his intention to contest the leadership and stated he had lost confidence in Starmer's ability to lead the party into the next general election. Over 95 Labour MPs have publicly urged Starmer to set a departure timetable, while some senior ministers have pressed for an orderly transition process. Starmer has rejected these calls and indicated he will fight any formal challenge, leaving open the possibility that a leadership contest could be triggered soon and accelerate his exit from Downing Street.
สรุปจาก AI ทดลองที่อ้างอิงข้อมูลจาก Polymarket ไม่ใช่คำแนะนำในการเทรดและไม่มีผลต่อการตัดสินตลาดนี้ · อัปเดตแล้วLabour blocks Andy Burnham's bid for parliamentary seat, sparking internal party row
December 31 rises to 74%4%
The Labour Party's decision to block popular Manchester Mayor Andy Burnham from standing in a parliamentary election was seen as an attempt to prevent a leadership challenge to Starmer. This deepened internal divisions and uncertainty about Starmer's future.
Labour lawmakers call for Starmer to resign following Mandelson revelations
December 31 surges to 92%21%
Increased pressure from within the Labour Party for Starmer to step down reached a peak, reflected in the market's high 'Yes' probability for his departure.
Starmer’s chief of staff resigns amid Mandelson‑Epstein fallout
December 31 jumps to 88%14%
The resignation of Starmer’s chief of staff over the Mandelson scandal signaled internal turmoil and reinforced market expectations of a possible leadership change, contributing to the final surge toward 88% confidence.
Starmer apologizes to Epstein victims amid mounting leadership pressure
December 31 jumps to 87%14%
Starmer publicly apologized for appointing Mandelson and acknowledged the damage caused, but faced increasing calls for his resignation from opposition and some Labour lawmakers, driving market prices sharply higher for his departure by year-end.
Starmer's chief of staff resigns over Mandelson-Epstein scandal
December 31 jumps to 74%5%
The resignation of Starmer's chief of staff, who advised on Mandelson's appointment, deepened the crisis and raised questions about Starmer's leadership and accountability, pushing market probabilities for his exit higher.
Joint UK‑Norway naval patrols announced to counter Russian submarines
June 30 surges to 67%27%
The defence agreement with Norway was portrayed as a strong security move, giving a modest boost to confidence in Starmer’s leadership for the June‑30 and May‑31 outcomes.
Starmer apologises to victims after Mandelson‑Epstein investigation expands
A new police investigation into Mandelson’s alleged leaks to Epstein revived the scandal, causing a sharp price jump for the “Yes” outcome as traders feared a leadership crisis.
Starmer’s approval spikes after successful UK‑Japan cybersecurity pact
December 31 drops to 74%7%
A high‑profile agreement with Japan on cybersecurity and critical minerals was portrayed as a diplomatic win, temporarily easing political pressure on Starmer and causing a brief price dip before the market resumed its upward trend.
Starmer meets Chinese President Xi in Beijing
December 31 surges to 83%17%
Starmer’s high‑profile diplomatic trip to China was intended to boost economic prospects, temporarily lifting optimism for the longer‑term dates but not enough to reverse the overall downward trend.
Starmer meets Xi Jinping to deepen UK-China ties amid global turbulence
Starmer's visit to China and meeting with President Xi Jinping aimed to strengthen UK-China relations and secure economic benefits. While this diplomatic effort was significant, it had limited impact on the market's assessment of Starmer's tenure, with only minor price fluctuations.
Starmer announces teen social‑media ban options
May 19 jumps to 12%10%
Starmer’s statement that a ban on teenage social‑media use was “not off the table” sparked public debate and drove Yes prices for the May 19 outcome sharply upward.
Starmer announces plan to ban teen social‑media use
May 31 rises to 23%4%
Starmer’s proposal to consider an Australia‑style ban on teenage social‑media access was viewed as a bold policy move, nudging the May‑31 price up from 19% to 23% as the market saw a potential distraction from leadership pressures.
Starmer apologizes for Mandelson appointment amid mounting pressure
December 31 rises to 73%4%
Starmer publicly apologized for appointing Mandelson as ambassador despite his Epstein ties, acknowledging the damage to trust and increasing calls for his resignation, which influenced market prices for later outcomes.
Labour chief of staff Morgan McSweeney resigns over Mandelson scandal
December 31 surges to 86%37%
The resignation of a key political ally and architect of Starmer's election campaign further weakened the Prime Minister's position and authority.
Labour blocks Manchester Mayor Andy Burnham's bid for Parliament seat
Labour's National Executive Committee, including Starmer, blocked Burnham's candidacy, seen as a potential leadership challenger, reflecting internal party tensions and affecting market confidence in Starmer's stability, impacting May 19 and May 31 outcomes.
Starmer meets Xi Jinping, calls for deeper UK-China ties amid global turbulence
December 31 rises to 70%2%
Starmer's diplomatic efforts to strengthen UK-China relations aimed to boost economic prospects and stabilize his leadership image, contributing to a rise in the December 31 market outcome despite domestic challenges.
Starmer’s chief of staff resigns over Mandelson-Epstein scandal
December 31 surges to 87%27%
Morgan McSweeney, Starmer’s chief of staff, resigned taking responsibility for advising the controversial appointment of Mandelson, intensifying pressure on Starmer and contributing to a sharp rise in market prices for Starmer leaving by December 31.
Starmer's chief of staff resigns over Mandelson-Epstein scandal
May 31 jumps to 29%10%
Morgan McSweeney, Starmer's chief of staff, resigned taking responsibility for advising the controversial appointment of Peter Mandelson as ambassador despite his Epstein ties. This resignation highlighted internal turmoil and increased market concerns about Starmer's leadership stability, reflected in rising probabilities for his departure by May 31, 2026.
Starmer announces release of Mandelson appointment files
The government committed to publishing documents about Mandelson’s ambassadorship, a move seen as an attempt to contain the scandal but which underscored the depth of the issue, pushing odds lower.
Starmer proposes teenage social‑media ban, sparking public backlash
December 31 plunges to 49%35%
The Prime Minister’s suggestion to consider an Australia‑style ban on social‑media for under‑16s triggered criticism and concerns over civil liberties, causing a sharp drop in confidence in his leadership.
Labour suffers heavy losses in local elections, Reform UK gains ground
May 15 plunges to 0%25%
The poor performance of Labour in the May 7 local elections, with significant gains by Reform UK, led to a sharp drop in market confidence for Starmer's short-term survival, especially for May 15 and May 19 outcomes.
Labour Party suffers major losses in local and regional elections
June 30 drops to 39%6%
The poor performance in local elections was widely interpreted as a referendum on Starmer's leadership, fueling speculation about his potential resignation.
Labour blocks Andy Burnham’s bid for Parliament seat, sparking party row
June 30 rises to 41%3%
The decision to block popular Manchester Mayor Andy Burnham from standing in a parliamentary by-election fueled internal Labour Party tensions and speculation about leadership challenges to Starmer, influencing market uncertainty around his tenure.
Labour suffers big losses in local elections, Starmer refuses to quit
June 30 surges to 69%29%
Labour's poor performance in the May 7 local and regional elections, with significant losses and gains by Reform UK, intensified pressure on Starmer's leadership. Despite calls for resignation from within his party, Starmer insisted he would not step down, causing a moderate increase in the market probability for his departure by June 30, 2026.
Starmer defends his position after election setbacks
Starmer publicly pledged to stay on despite the election defeats, but the statement failed to restore market confidence, contributing to a further price drop.
Labour suffers heavy losses in local and regional elections, Reform UK gains
December 31 jumps to 74%13%
Labour's poor performance in the May 7 elections was seen as a referendum on Starmer's leadership amid ongoing scandals and economic difficulties. Despite pressure, Starmer refused to resign, but the results fueled speculation about a leadership challenge.
Labour blocks Andy Burnham's bid for Parliament, sparking internal party row
May 19 drops to 6%8%
The decision to block a popular rival's parliamentary bid fueled speculation of internal party conflict and leadership challenges to Starmer, reflecting growing instability within Labour ahead of local elections.
Starmer meets with Japanese leaders on cybersecurity and critical minerals
During a stop in Tokyo, Starmer secured a cooperation deal with Japan on cybersecurity and critical minerals, signalling a proactive foreign‑policy agenda that briefly lifted confidence in his tenure.
Local and regional elections deliver heavy losses for Labour
The May 5 local elections saw Labour lose more than half the seats it defended, a blow interpreted as a de‑facto referendum on Starmer’s leadership, further depressing market confidence.
Starmer’s chief of staff resigns over Mandelson‑Epstein scandal
Morgan McSweeney quit as Starmer’s chief of staff after the fallout from Peter Mandelson’s appointment as U.S. ambassador, intensifying scrutiny of Starmer’s judgment and pushing market odds lower.
Starmer leads UK delegation to China to forge strategic partnership
December 31 surges to 84%18%
Starmer’s high‑profile visit to Beijing, aimed at deepening trade and diplomatic ties, was interpreted as a bold foreign‑policy gamble that lifted market expectations of his staying in office through year‑end.
Starmer announces UK‑Norway joint naval patrols to protect undersea cables
The AP story on joint UK‑Norway naval operations was viewed as a strong security move, lifting the December‑31 contract again after a brief dip in April.
UK and Norway launch joint naval patrols to protect undersea cables
December 31 jumps to 68%7%
The defence cooperation was interpreted as a strong security move by Starmer, nudging the December‑31 outcome upward as confidence in his leadership rose.
UK and Norway sign joint naval patrol agreement
December 31 rises to 69%1%
The defense pact was portrayed as a strong foreign‑policy win for Starmer, briefly lifting the December‑31 price from 68% to 69% as market sentiment improved.
Starmer meets Xi Jinping to deepen UK-China ties amid global turbulence
December 31 surges to 67%15%
Starmer’s visit to China and meeting with President Xi Jinping aimed to improve diplomatic and economic relations, signaling a strategic partnership. While positive for Starmer’s international standing, it had limited impact on his domestic leadership market.
Starmer meets Xi Jinping in Beijing, pledges deeper UK‑China partnership
The same visit also raised the May‑19 outcome modestly as the market viewed the foreign‑policy success as a sign of Starmer’s continued authority.
Starmer meets Xi Jinping in Beijing, pledges deeper UK‑China partnership
June 30 rises to 45%3%
The high‑profile diplomatic trip was seen as a boost to Starmer’s economic agenda, lifting the June‑30 and December‑31 outcomes as investors perceived reduced political risk.
UK‑Norway joint naval patrols announced amid Russian submarine activity
The defence partnership was presented as a strong security move but also underscored heightened threat levels, keeping pressure on Starmer’s leadership credibility.
Starmer’s chief of staff resigns over Mandelson scandal
June 30 jumps to 52%7%
The resignation of Starmer’s chief of staff, who had advised the Mandelson appointment, intensified leadership doubts and pushed Yes prices for the June 30 outcome higher.
Starmer announces consideration of teen social‑media ban, sparking public debate
December 31 jumps to 69%9%
Starmer’s proposal to potentially ban social‑media access for under‑16s was seen as a bold policy move that divided opinion and added to political pressure, nudging the market further toward a ‘Yes’ outcome.
Starmer proposes teen social‑media ban, sparking public debate
Starmer announced that a ban on social‑media use for under‑16s was being considered, echoing Australia’s policy. The proposal was controversial and seen as a distraction from governance, causing a dip in the December‑31 price.
Starmer faces backlash over teen social‑media ban proposal
Starmer’s suggestion to consider an Australia‑style ban on under‑16 social‑media use sparked debate about civil liberties, adding to political fatigue and nudging the market upward.
Starmer meets Xi Jinping, announces deeper UK‑China ties
The high‑profile meeting produced trade deals but also revived criticism that Starmer is too close to China, sustaining market pressure on his tenure.
Starmer visits China, seeks to deepen UK-China strategic partnership
December 31 rises to 56%3%
Starmer's visit to China and meeting with President Xi Jinping aimed to improve diplomatic and economic ties amid global turbulence. While it showcased Starmer's international engagement, it had limited effect on his domestic political challenges.
Starmer defends UK stance on Arctic security amid US‑China tensions
AP covered Starmer’s comments on Arctic security, reinforcing his image as a steady leader and contributing to a modest rise in the December‑31 contract.
Peter Mandelson arrested on suspicion of misconduct in public office
December 31 surges to 73%22%
Following the release of Epstein-related documents, British police arrested Mandelson, intensifying the scandal and increasing pressure on Starmer, which caused a sharp rise in the December 31 market price.
Labour faces special election loss in Greater Manchester, raising leadership concerns
June 30 drops to 43%7%
The anticipated loss in a Greater Manchester special election intensified speculation about Starmer's leadership future, contributing to a decline in market confidence for his continuation through mid-2026.
Starmer vows not to quit after local elections deliver losses for Labour
May 31 jumps to 31%12%
Following poor local and regional election results in May 2026, Starmer insisted he would not resign despite significant losses for Labour and gains for Reform UK. This tempered market expectations for an immediate departure, causing some price volatility especially for the May 31 and May 19 outcomes.
UK police arrest Peter Mandelson over alleged misconduct linked to Epstein
December 31 jumps to 70%8%
The Metropolitan Police launched a criminal investigation and arrested Mandelson on suspicion of misconduct in public office related to his relationship with Jeffrey Epstein. This intensified the political crisis for Starmer, undermining his leadership and increasing calls for his resignation.
Peter Mandelson arrested on suspicion of misconduct in public office
December 31 jumps to 70%8%
The arrest of the former ambassador by British police significantly escalated the scandal, directly linking Starmer's appointment to a criminal investigation.
Peter Mandelson arrested amid Epstein scandal, intensifying pressure on Starmer
December 31 surges to 73%21%
The arrest of Mandelson, Starmer's appointee and Epstein associate, escalated the political crisis, severely undermining Starmer's judgment and increasing calls for his resignation, causing market volatility.
Starmer apologises for Mandelson appointment, vows transparency
Starmer publicly apologized for appointing Mandelson and promised to release related documents, attempting to calm party unrest. The apology was enough to halt the price surge, causing a modest pull‑back.
Mandelson investigation opened, Starmer apologises
December 31 jumps to 70%8%
Metropolitan Police opened a criminal investigation into Peter Mandelson’s alleged leaks to Epstein, and Starmer publicly apologized, causing a sharp rise in Yes prices for the December 31 outcome.
Starmer’s chief of staff quits, citing Mandelson scandal
A second senior aide, Morgan McSweeney, stepped down, reinforcing the narrative of a collapsing inner circle and pushing the market sharply toward a “Yes” outcome.
Starmer announces joint UK‑Norway naval patrols to protect undersea cables
December 31 jumps to 70%8%
A defence agreement with Norway to hunt Russian submarines and safeguard critical infrastructure was presented as a strong security move, boosting confidence in Starmer’s leadership.
Starmer releases documents on Mandelson’s vetting process
December 31 drops to 62%8%
Starmer’s promise to publish vetting files was seen as an attempt to contain the scandal, but the partial release further eroded confidence, contributing to a dip from 70% to 62% on February 13.
Starmer faces parliamentary pressure after police open Mandelson investigation
Metropolitan Police launched a criminal investigation into former ambassador Peter Mandelson over alleged leaks to Jeffrey Epstein. The development revived questions about Starmer’s judgment and raised the risk of a leadership challenge, pushing the December‑31 price sharply upward.
Starmer condemns Russian GRU cyber‑attack, announces sanctions
A strong stance against Russia, including sanctions on alleged GRU officers, was intended to showcase leadership but also highlighted security challenges, marginally increasing resignation risk perception.
Starmer secures UK‑US trade deal reducing tariffs on key industries
AP reported a trade agreement with the United States that was seen as a major economic win for Starmer, driving the December‑31 contract to a new high in early February.
UK police launch criminal investigation into Peter Mandelson over Epstein leaks
December 31 jumps to 70%8%
The launch of a formal police probe heightened pressure on Starmer, coinciding with a jump in the December‑31 price from 62% to 70% as traders priced in a possible leadership crisis.
Starmer’s chief of staff resigns amid Mandelson‑Epstein revelations
June 30 surges to 48%26%
Morgan McSweeney quit, citing responsibility for the Mandelson appointment; the resignation intensified scrutiny of Starmer’s judgment and drove the June‑30 and May‑31 outcomes sharply upward.
Starmer’s chief of staff resigns amid Mandelson‑Epstein revelations
May 31 jumps to 26%7%
The same resignation also caused a dramatic swing in the May‑31 outcome as traders priced in a higher risk of an imminent resignation.
Police open criminal investigation into Peter Mandelson over alleged Epstein leaks
December 31 jumps to 68%7%
The launch of a police investigation into Mandelson’s alleged misconduct heightened pressure on Starmer, who had appointed him, leading to a sharp price jump as traders priced in a higher risk of his resignation.
Starmer announces China visit amid US‑UK tensions
May 31 jumps to 27%8%
Starmer’s planned trip to China to seek a strategic partnership was announced, raising hopes for economic gains but also sparking criticism from US allies, nudging Yes prices for the May 31 outcome upward.
Starmer faces leadership crisis over Mandelson Epstein appointment scandal
June 30 surges to 57%29%
Revelations that Peter Mandelson was appointed ambassador to the US despite failing security checks and his ties to Jeffrey Epstein triggered a political crisis for Starmer, with calls for his resignation and cabinet ministers rallying around him. This event caused a sharp increase in the market's probability for Starmer leaving by June 30 and December 31.
Starmer announces new UK‑Japan cybersecurity and critical minerals pact
The AP article on the UK‑Japan agreement highlighted Starmer’s active foreign policy, which helped push the December‑31 contract back up toward its peak.
Starmer heads to China for strategic partnership talks
The prime minister’s four‑day visit to Beijing was framed as an economic boost but drew criticism at home, creating uncertainty about his foreign‑policy stance and nudging the market higher.
Starmer announces investigation into Mandelson‑Epstein files
Starmer pledged to release government emails related to Mandelson’s vetting, signalling a possible accountability process that heightened speculation about his political survival.
UK police open criminal investigation into Peter Mandelson
December 31 jumps to 73%11%
The Metropolitan Police launched a criminal investigation into Peter Mandelson for potential misconduct in public office related to his relationship with Jeffrey Epstein, significantly increasing pressure on Starmer.
Starmer defuses Mandelson‑veting controversy in Parliament
December 31 jumps to 59%6%
Starmer answered parliamentary questions about the Mandelson vetting process, claiming ignorance of Epstein ties, which temporarily steadied market sentiment after earlier turmoil.
Starmer’s chief of staff resigns over Mandelson‑Epstein controversy
Morgan McSweeney quit, citing the Mandelson appointment as a mistake, intensifying internal pressure on Starmer and causing a noticeable uptick in the market’s “Yes” price.
Starmer’s government announces strategic partnership with China
Starmer’s visit to Beijing and the signing of a strategic partnership were framed as a boost to the UK economy. Traders viewed the diplomatic win as a sign of political stability, nudging the December‑31 probability higher.
Starmer faces parliamentary backlash over Mandelson ambassador appointment
December 31 rises to 61%4%
After the Guardian revealed that Peter Mandelson failed security vetting, Starmer’s handling of the appointment sparked calls for his resignation, pushing the December‑31 option up from 57% to 61%.
Local elections deliver heavy losses for Labour
June 30 jumps to 42%7%
The bruising local and regional elections saw Labour lose more than half the seats it defended, intensifying speculation about Starmer’s tenure and lifting Yes prices for the June 30 outcome.
Starmer meets with Ukraine and European leaders amid ongoing crises
December 31 rises to 60%2%
Starmer met with Ukrainian President Zelenskyy and European leaders, highlighting his role in international diplomacy. However, this did not alleviate domestic political pressures from the Mandelson scandal and economic challenges.
Starmer meets US President Trump to discuss NATO and Greenland
AP reported a high‑profile meeting between Starmer and Trump, which temporarily raised concerns about UK‑US relations and caused a short‑term dip in the December‑31 contract.
Starmer meets with European leaders amid ongoing political pressure
December 31 rises to 60%3%
Starmer's engagement with European leaders highlighted his efforts to maintain international standing despite domestic turmoil, but did not significantly improve market confidence in his near-term tenure.
Starmer's chief of staff resigns over Mandelson-Epstein scandal
December 31 rises to 56%4%
Morgan McSweeney resigned as Starmer's chief of staff, taking responsibility for advising the Prime Minister to appoint Peter Mandelson, further intensifying the political crisis.
Starmer meets President Xi in Beijing, seeking economic boost
December 31 rises to 57%4%
Starmer’s high‑profile visit to China was framed as a bid to revive the UK economy, but domestic critics warned the trip could backfire politically, causing a modest rise in the market’s expectation of his removal.
Starmer meets Xi Jinping to seek thaw in UK-China relations
December 31 rises to 57%4%
Starmer's visit to China aimed to boost the UK economy and improve diplomatic ties, but also highlighted tensions with the US and internal party concerns, impacting perceptions of his leadership stability.
Starmer faces parliamentary showdown after Mandelson appointment scandal erupts
December 31 jumps to 57%7%
Senior ministers rallied behind Starmer as MPs demanded answers over the appointment of Peter Mandelson as U.S. ambassador despite failed security vetting, raising doubts about Starmer’s leadership and pushing the December‑31 outcome higher.
Starmer's chief of staff resigns over Mandelson-Epstein ambassador appointment
December 31 jumps to 61%8%
Morgan McSweeney resigned taking responsibility for advising Starmer to appoint Mandelson as ambassador despite Epstein ties, escalating the political storm and further undermining Starmer's leadership, impacting the December 31 market outcome.
Starmer apologises for Mandelson‑Epstein revelations, promises investigation
Starmer’s public apology and the launch of a police investigation into Mandelson were covered by AP, causing a brief dip in the December‑31 contract before it recovered later in the window.
Parliamentary allies rally behind Starmer amid Mandelson‑Epstein scandal
December 31 rises to 54%4%
Senior cabinet ministers publicly defended Starmer after revelations that Peter Mandelson, appointed ambassador to the U.S., had undisclosed ties to Jeffrey Epstein, intensifying scrutiny of Starmer’s judgment and nudging the market upward.
Labour lawmakers call for new leadership following Mandelson scandal
June 30 rises to 38%4%
Following the poor election results and ongoing controversy over the Mandelson appointment, several Labour lawmakers publicly questioned Starmer's leadership and called for a change.
Labour Party suffers major losses in local and regional elections
December 31 drops to 44%6%
The governing Labour Party experienced significant losses in local and regional elections, which were widely viewed as a referendum on Starmer's leadership and his handling of the Mandelson scandal.
Allies rally behind Starmer amid Mandelson‑Epstein controversy
Senior cabinet ministers publicly defended Starmer after the revelation that Peter Mandelson, a friend of Jeffrey Epstein, had been appointed ambassador to the United States despite failing security vetting. The show of party unity temporarily halted the market’s slide.
Allies rally behind Starmer as Mandelson‑Epstein appointment sparks leadership crisis
December 31 rises to 53%3%
Senior ministers publicly defended Starmer after the revelation that Peter Mandelson, a friend of Jeffrey Epstein, was appointed ambassador to the U.S. despite failed security vetting, intensifying pressure for a leadership challenge.
Allies rally behind Starmer as Mandelson appointment sparks leadership doubts
Cabinet ministers publicly defended Starmer after the revelation that Peter Mandelson, a friend of Jeffrey Epstein, was appointed ambassador to the U.S. despite failing security vetting, raising questions about Starmer’s judgment and prompting a price rise for a resignation outcome.
Starmer faces parliamentary revolt over Mandelson appointment
December 31 rises to 54%4%
Senior ministers publicly backed Starmer as opposition lawmakers demanded his resignation over the appointment of Peter Mandelson, a friend of Jeffrey Epstein, to the U.S. ambassadorship, pushing Yes prices higher for the December 31 outcome.
Starmer visits China seeking economic boost amid domestic challenges
June 30 rises to 35%2%
Starmer’s trip to China aimed to improve UK-China relations and secure economic investment to counteract domestic political and economic difficulties, providing some support to his leadership but with ongoing uncertainty reflected in market prices for June 30 outcome.
Starmer faces intensified scrutiny over Mandelson’s failed security vetting
June 30 drops to 33%5%
Revelations that Mandelson failed security vetting before his ambassadorial appointment and that Starmer may have misled Parliament intensified calls for his resignation, increasing political instability and impacting market confidence in Starmer’s survival through June 30.
Starmer begins China visit to boost trade and ease political pressure
June 30 rises to 35%2%
Starmer travelled to Beijing for talks with President Xi Jinping, aiming to secure economic benefits and demonstrate diplomatic strength. The move was interpreted as a positive signal for the government’s stability, prompting a modest rebound in the June‑30 price.
Starmer refuses to quit after heavy local‑election losses
June 30 drops to 33%5%
Following the local and regional elections that saw Labour lose more than half the seats it defended, Starmer publicly announced he would not resign. The news signaled continued internal party tension and kept the June‑30 outcome depressed as traders assessed the risk of a leadership challenge.
UK sanctions Russian GRU officers over cyber‑espionage attack
The AP detailed a new sanctions package targeting Russian intelligence officers, which was interpreted as a strong security stance by Starmer and nudged the December‑31 contract upward.
Starmer defends his record after local election losses
June 30 rises to 46%4%
Following a poor showing in local elections, Starmer publicly refused to resign, stabilising the market and nudging the price back up to 46 % as investors reassessed the likelihood of a leadership challenge.
Revelations emerge that Peter Mandelson failed security vetting before ambassador appointment
December 31 rises to 54%4%
The Guardian revealed that Mandelson, appointed ambassador to the US by Starmer, failed security vetting, contradicting Starmer's claims of full due process. This sparked a political crisis and led to the resignation of the Foreign Office's top civil servant, Olly Robbins, raising questions about Starmer's knowledge and judgment.
Allies rally behind Starmer as Mandelson‑Epstein scandal erupts
June 30 drops to 38%5%
AP reported that senior cabinet ministers publicly defended Starmer after revelations that Peter Mandelson, a friend of Jeffrey Epstein, had been appointed ambassador to the United States despite failing security vetting. The scandal intensified pressure on Starmer’s leadership, driving the June‑30 contract price down from its early‑October high.
Starmer refuses to quit after local elections deliver losses for Labour
June 30 rises to 39%2%
Following poor local election results that saw Labour suffer significant losses and gains by Reform UK, Starmer insisted he would not resign, despite growing calls within his party, causing a partial recovery in market confidence for his continued leadership past June 30.
Starmer vows not to quit after Labour suffers losses in local elections
June 30 rises to 43%3%
Following significant losses for Labour and gains for Reform UK in local elections, Starmer took responsibility but refused to resign, signaling ongoing leadership uncertainty and contributing to market fluctuations around the June 30 outcome.
Poor local election results deepen Labour Party crisis under Starmer
June 30 rises to 39%2%
Labour suffered significant losses in local and regional elections, weakening Starmer’s position and fueling speculation about a leadership challenge. Starmer vowed to stay, but internal party dissent increased, keeping market uncertainty high.
Starmer begins diplomatic tour of China to boost trade
June 30 rises to 42%3%
Starmer travelled to Beijing for a strategic partnership meeting with President Xi, a move aimed at revitalising the economy. The visit was welcomed by markets, contributing to a modest price rise from 39 % to 42 % over the next few days.
Local elections deliver heavy losses for Labour, boosting speculation of a leadership challenge
December 31 jumps to 57%6%
Labour suffered significant seat losses in the October 2025 local and regional elections, prompting commentators to view the results as a de‑facto referendum on Starmer’s leadership and increasing the market’s belief that he could be forced out before year‑end.
UK government agrees to release documents on Mandelson’s ambassador appointment
June 30 rises to 39%2%
Amid mounting anger over the Mandelson-Epstein scandal, the UK government agreed to release documents related to Mandelson’s appointment, aiming to quell criticism but keeping Starmer under pressure for his judgment and leadership.
Starmer’s chief of staff resigns over Mandelson-Epstein ambassador appointment
June 30 rises to 44%1%
Starmer’s chief of staff resigned taking responsibility for advising the appointment of Peter Mandelson as ambassador despite his ties to Jeffrey Epstein, intensifying the political crisis and raising doubts about Starmer’s judgment. This event heightened pressure on Starmer’s leadership, affecting market confidence in his tenure lasting through June 30.
Starmer rejects calls to resign amid mounting pressure over Mandelson scandal
June 30 rises to 38%3%
Despite growing calls from opposition and some within his party to resign over the Mandelson appointment and vetting failures, Starmer publicly rejected resignation demands, attempting to stabilize his position. This led to a partial recovery in market confidence.
UK police open criminal investigation into Mandelson over alleged leaks to Epstein
June 30 rises to 38%3%
The Metropolitan Police launched a criminal investigation into Peter Mandelson for misconduct in public office related to his relationship with Jeffrey Epstein, escalating the scandal and increasing political pressure on Starmer, reflected in market volatility around June 30 outcome.
Starmer vows not to resign after local elections deliver losses for Labour
June 30 rises to 38%3%
Following poor local election results with significant losses for Labour and gains for Reform UK, Starmer took responsibility but refused to quit, stabilizing market sentiment temporarily despite ongoing leadership doubts.
Starmer’s chief of staff resigns over Mandelson appointment scandal
June 30 jumps to 38%5%
Morgan McSweeney resigned taking responsibility for advising Starmer to appoint Mandelson despite his Epstein ties. This intensified the political crisis around Starmer, raising questions about his leadership and judgment, contributing to market volatility.
Local and regional elections show heavy losses for Labour
Results released showing Labour losing more than half the seats it defended signaled deep voter dissatisfaction, increasing speculation of a leadership challenge and pushing the market higher for a resignation before the end of 2025.
Government agrees to release Mandelson appointment files
June 30 rises to 38%4%
Starmer announced the UK would publish documents related to Mandelson’s ambassadorship, aiming to quell criticism but also highlighting the depth of the controversy, which kept pressure on Starmer and maintained the depressed price for the June 30 outcome.
UK and Norway launch joint naval patrols to protect undersea cables
June 30 dips to 33%1%
AP reported that Starmer and Norway’s prime minister announced a joint naval operation to hunt Russian submarines and safeguard critical infrastructure. The diplomatic move was seen as a positive foreign‑policy achievement, helping the market recover modestly to the mid‑30 % range.
Starmer’s chief of staff resigns over Mandelson‑Epstein controversy
June 30 jumps to 34%7%
Morgan McSweeney, Starmer’s chief of staff, stepped down, citing responsibility for the Mandelson appointment. The resignation signaled internal turmoil and briefly lifted the June 30 price from 27% to 34% as the market reassessed the immediacy of a leadership overthrow.
Starmer’s chief of staff resigns over Mandelson appointment
June 30 jumps to 34%7%
Two days after the scandal broke, Starmer’s chief of staff Morgan McSweeney quit, citing responsibility for advising the controversial Mandelson appointment, further signaling internal turmoil and pushing the June 30 price down to a new low.
Starmer refuses to quit after heavy local election losses
June 30 drops to 27%8%
Following local and regional elections where Labour lost more than half the seats it defended and Reform UK made gains, Starmer announced he would stay on. The poor results heightened speculation of a leadership challenge, causing the June 30 price to fall further from 35% to 27%.
Starmer leads UK delegation to China for strategic partnership talks
AP reported Starmer’s four‑day visit to Beijing, aimed at deepening UK‑China ties, which helped lift longer‑dated contracts as the market saw diplomatic engagement as a sign of political stability.
Chief of staff resigns over Mandelson‑Epstein controversy
June 30 drops to 27%8%
The AP disclosed that Starmer’s chief of staff, Morgan McSweeney, quit, taking responsibility for advising the Mandelson appointment. The resignation underscored internal turmoil and further lowered confidence in Starmer’s tenure, contributing to the market’s plunge to a low of 27 % on September 17.
Allies rally behind Starmer as Mandelson‑Epstein scandal erupts
June 30 plunges to 35%16%
AP reported that senior cabinet ministers publicly defended Starmer after revelations that Peter Mandelson, a friend of Jeffrey Epstein, had been appointed ambassador despite failing security vetting. The scandal intensified pressure on Starmer’s leadership, prompting a sharp drop in the market’s Yes probability.
Starmer faces backlash after Labour suffers losses in local elections
December 31 dips to 50%1%
Labour's poor performance in local elections led to calls within the party for Starmer to resign, reflecting declining confidence in his leadership amid economic and policy challenges. This event increased market speculation about Starmer's potential departure by year-end.
Revelation that Peter Mandelson failed security vetting before ambassador appointment
June 30 plunges to 35%16%
The Guardian revealed that Mandelson failed security vetting before becoming UK ambassador to the US, contradicting Starmer's claim that full due process was followed. This intensified scrutiny on Starmer's judgment and triggered political fallout including the resignation of the Foreign Office's top civil servant.
Revelations of Mandelson's failed security vetting and Epstein ties rock Starmer's leadership
December 31 plunges to 35%15%
The disclosure that Peter Mandelson was appointed ambassador to the US despite failing security checks and his friendship with Jeffrey Epstein triggered a major political crisis for Starmer, leading to calls for his resignation and a drop in market confidence for near-term departure.
Allies rally behind Starmer amid Mandelson‑Epstein scandal
June 30 plunges to 35%16%
Senior cabinet ministers publicly defended Starmer after revelations that Peter Mandelson, a friend of Jeffrey Epstein, was appointed ambassador despite failed security vetting. The show of support reduced market fears of an imminent leadership crisis, pulling the June 30 price down from 51% to 35%.
Labour suffers heavy losses in UK local and regional elections
The local elections delivered a decisive defeat for Starmer’s Labour Party, with the party losing more than half the seats it defended. The result was interpreted as a de‑facto referendum on Starmer’s leadership, prompting a sharp rise in the probability he would step down before year‑end.
Allies rally behind Starmer as Mandelson‑Epstein scandal erupts
June 30 plunges to 27%24%
AP reported that senior cabinet ministers publicly defended Starmer amid revelations that he appointed Peter Mandelson—who failed security vetting and had ties to Jeffrey Epstein—to the key ambassadorial post, sparking intense parliamentary scrutiny and lowering market confidence in Starmer’s tenure.
Revelations emerge that Peter Mandelson failed security vetting before US ambassador appointment
June 30 plunges to 35%16%
The Guardian revealed that Mandelson, appointed ambassador to the US by Starmer, failed security vetting, contradicting Starmer's claims of full due process. This revelation triggered political backlash and doubts about Starmer's judgment, causing a sharp drop in market confidence for Starmer's survival past June 30.
Starmer faces leadership crisis over Mandelson Epstein appointment scandal
June 30 plunges to 35%16%
Revelations that Peter Mandelson was appointed ambassador to the US despite failing security checks and his ties to Jeffrey Epstein sparked a political crisis for Starmer, leading to calls for his resignation and a sharp drop in market confidence for his continued leadership by June 30.
Revelation of Mandelson's failed security vetting and Epstein ties rocks Starmer's leadership
December 31 jumps to 59%9%
The Guardian revealed that Peter Mandelson failed security vetting before becoming UK ambassador to the US, despite his friendship with convicted sex offender Jeffrey Epstein. This scandal severely damaged Starmer's credibility and led to calls for his resignation, causing a significant rise in the market probability for Starmer leaving by December 31, 2025.
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