UK By-Elections: Conservatives Seize Aberdeen South as Burnham Eyes Labour Leadership in Makerfield
The Scottish Conservatives secured a historic victory in Aberdeen South, while a high-stakes vote in Makerfield could pave the way for a Labour leadership challenge.
By Factlen Editorial Team
- Scottish Conservatives
- Argue that the Aberdeen South win is a clear rejection of policies that harm the oil and gas industry.
- Scottish National Party
- Acknowledge the defeat but maintain that transitioning away from fossil fuels is a necessary long-term policy.
- Labour Insurgents
- View the Makerfield by-election as a critical maneuver to replace Keir Starmer with Andy Burnham.
- Reform UK
- Position themselves as the true voice of the working class, challenging Labour in its traditional heartlands.
What's not represented
- · Climate advocacy groups pushing for a faster transition away from North Sea drilling.
- · Local Makerfield residents concerned about their constituency being used purely for national political maneuvering.
Why this matters
These two local by-elections carry massive national stakes: the Aberdeen South result signals a fierce backlash against policies restricting North Sea oil drilling, while a victory in Makerfield would give Andy Burnham the parliamentary seat he needs to challenge Keir Starmer for the role of Prime Minister.
Key points
- The Scottish Conservatives won the Aberdeen South by-election, marking their first Scottish by-election victory since 1967.
- Conservative candidate Douglas Lumsden secured nearly 50% of the vote by campaigning heavily in favor of the North Sea oil and gas industry.
- The SNP conceded the loss of the formerly safe seat, acknowledging voter frustration over local economic concerns.
- In Makerfield, turnout surged to 58.75% as voters cast ballots in a highly anticipated contest.
- Greater Manchester Mayor Andy Burnham is running in Makerfield to re-enter Parliament and potentially launch a Labour leadership challenge.
The UK political landscape experienced a seismic shock early Friday morning as the Scottish Conservatives captured the Aberdeen South parliamentary seat from the Scottish National Party (SNP), marking the first Tory by-election victory in Scotland since 1967.[1][3]
The historic win unfolded on a night of high-stakes local elections that carry profound national implications. While the Conservatives celebrated in Scotland, all eyes remained fixed on the working-class constituency of Makerfield in North West England, where Greater Manchester Mayor Andy Burnham is bidding to re-enter Parliament—a move widely seen as the prelude to a leadership challenge against Prime Minister Keir Starmer.[2][4]
In Aberdeen South, Conservative candidate Douglas Lumsden secured a decisive victory, capturing 14,308 votes to claim nearly 50% of the vote share and a majority of 6,050 over the SNP. The result is a crushing blow to the nationalists in a seat previously held by Stephen Flynn, the SNP's former Westminster leader who recently transitioned to the Scottish Parliament.[3]

The Conservative campaign in Aberdeen South was laser-focused on a single, defining local issue: the future of the North Sea oil and gas industry. Lumsden, who worked in the energy sector for 25 years, framed the contest as a referendum on drilling rights, successfully weaponizing voter anxiety over the SNP and Labour's shared opposition to new oil and gas exploration licenses.[6]
Following the declaration, Lumsden proclaimed that the people of Aberdeen had delivered a "resounding answer" in support of the energy sector. Conservative leader Kemi Badenoch echoed the sentiment, stating that the victory should serve as a "deafening message" to both Labour and the SNP that their energy policies are inflicting economic vandalism on the North East of Scotland.[3][6]
Following the declaration, Lumsden proclaimed that the people of Aberdeen had delivered a "resounding answer" in support of the energy sector.
For the SNP, the loss of a formerly safe seat underscores deepening vulnerabilities ahead of the 2029 general election. A senior SNP source conceded it was the "Tories' night," while Flynn took to social media to acknowledge a "tough night in Aberdeen," suggesting that voter frustration over local economic concerns and recent internal party scandals had taken a heavy toll.[1][5]
Hundreds of miles south, the Makerfield by-election presented an entirely different, yet equally existential, threat to the UK's political establishment. The contest was artificially triggered when Labour MP Josh Simons resigned his seat specifically to clear a path for Burnham to return to the House of Commons.[4]

Under Labour Party rules, any candidate for the leadership must be a sitting Member of Parliament. By stepping down, Simons provided Burnham—currently the most popular figure in the Labour Party and a vocal critic of Starmer's centrist administration—with the necessary platform to launch a potential coup.[4]
Turnout in Makerfield surged to 58.75%, a remarkable six-point increase from the 2024 general election. Election experts noted that such a spike in mid-term by-election participation is exceptionally rare, reflecting the intense national spotlight on a race that could effectively determine the next Prime Minister.[1]
Despite Labour's structural advantages in Makerfield, Burnham faced a fierce challenge from Reform UK. The populist right-wing party, which recently swept all eight council wards in the constituency during local elections, fielded Robert Kenyon in what Reform leader Nigel Farage characterized as a "David versus Goliath battle" for the allegiance of working-class voters.[1][4]
As the final ballots are tallied in Makerfield, the dual by-elections underscore a volatile and highly fragmented British electorate. Whether driven by regional economic anxieties in Aberdeen or national leadership machinations in Greater Manchester, local voters are wielding their localized power to force dramatic realignments in Westminster.[1][4]
How we got here
May 14, 2026
Labour MP Josh Simons announces his resignation in Makerfield to allow Andy Burnham to run.
May 2026
Stephen Flynn and other MPs transition to the Scottish Parliament, triggering Scottish by-elections.
June 18, 2026
Voters go to the polls in Aberdeen South, Makerfield, and Arbroath and Broughty Ferry.
June 19, 2026
The Scottish Conservatives declare a historic victory in Aberdeen South, while Makerfield tallies a massive turnout.
Viewpoints in depth
Scottish Conservatives
The party views the Aberdeen South victory as a mandate to protect the North Sea energy sector.
Conservative leaders framed the by-election strictly around local economic survival, arguing that the SNP and Labour's refusal to grant new drilling licenses amounts to 'economic vandalism.' By running a candidate with 25 years of experience in the oil and gas industry, the Tories successfully consolidated pro-union and pro-industry voters, arguing that a transition away from fossil fuels cannot come at the expense of Aberdeen's foundational economy.
Scottish National Party
The SNP acknowledges a difficult defeat driven by local economic anxieties and recent party struggles.
While conceding the loss of Stephen Flynn's former seat, SNP officials point to the unique vulnerability of Aberdeen South, where the local economy is inextricably tied to the fossil fuel industry. The party maintains that its long-term strategy of transitioning to renewable energy is necessary, even if it currently alienates North Sea workers. Internally, the defeat is also seen as a symptom of broader voter fatigue following recent leadership changes and funding controversies within the party.
Labour Insurgents
Supporters of Andy Burnham see the Makerfield contest as the necessary first step to changing national leadership.
For Burnham's camp, the Makerfield by-election is less about local representation and entirely about national strategy. Because Labour Party rules require the leader to be a sitting MP, Burnham's allies engineered the vacancy to bring the popular Greater Manchester Mayor back to Westminster. They argue that Prime Minister Keir Starmer's centrist approach has alienated the party's working-class base, and that Burnham is the only figure capable of fending off the rising populist threat from Reform UK.
What we don't know
- The final vote tally and margin of victory in the Makerfield by-election have not yet been officially declared.
- It remains unclear exactly when Andy Burnham might formally launch a leadership challenge against Keir Starmer if he secures the Makerfield seat.
- How the SNP will adjust its energy and economic policies ahead of the 2029 general election in response to the Aberdeen South defeat.
Key terms
- By-election
- An election held in a single political constituency to fill a vacancy that arises during a government's term.
- North Sea Oil and Gas
- The offshore energy industry based largely around Aberdeen, Scotland, which has become a major political flashpoint over climate policy and local jobs.
- Reform UK
- A right-wing populist political party in the UK that has increasingly challenged both the Conservatives and Labour for working-class voters.
Frequently asked
Why did the Aberdeen South by-election happen?
The by-election was triggered when the sitting SNP Member of Parliament, Stephen Flynn, resigned his Westminster seat after being elected to the Scottish Parliament in Holyrood.
Why is the Makerfield by-election so important?
Labour MP Josh Simons intentionally resigned his seat to allow Greater Manchester Mayor Andy Burnham to run. If elected, Burnham will re-enter Parliament, making him eligible to challenge Keir Starmer for the Labour Party leadership.
When was the last time the Conservatives won a Scottish by-election?
Before the Aberdeen South victory, the last time the Conservative Party won a parliamentary by-election in Scotland was in 1967.
Sources
[1]The GuardianReform UK
SNP concedes Aberdeen South with Scottish Conservatives set to win
Read on The Guardian →[2]Al JazeeraLabour Insurgents
Vote counting begins in high-stakes UK by-election
Read on Al Jazeera →[3]Sky NewsScottish Conservatives
Conservatives win by-election in Aberdeen South
Read on Sky News →[4]The Washington PostLabour Insurgents
The local election that could topple Britain's prime minister
Read on The Washington Post →[5]The IndependentScottish National Party
SNP concede defeat in the Aberdeen South by-election
Read on The Independent →[6]HolyroodScottish Conservatives
Aberdeen South by-election a 'referendum on oil and gas'
Read on Holyrood →
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