Updated
UK PARLIAMENTARY BY-ELECTION · 18 JUNE 2026
Aberdeen South by-election result
Douglas Lumsden · Conservative gain from SNP
Winning vote share49.5%
Conservative finished 20.9 points ahead of SNP, on 38.0% turnout.
Who won?
Douglas Lumsden won for Conservative. The majority was 6,050 votes.
Did the seat change hands?
Yes. Conservative gained the seat from SNP.
Was it a surprise?
Surprise gain. The Conservatives overturned an SNP majority and increased their vote share by 25 points, winning by a margin few national polls would have implied.
WHAT IT TELLS US
Read the local result in context
The result is a reminder that Scotland does not move in lockstep with GB polling. A concentrated anti-SNP vote and strong local candidate can still produce a large Conservative win.
A by-election changes one MP. Turnout, candidates and local circumstances can differ sharply from a general election, so this result is not a national voting-intention poll.
SOURCE
Check the published result
Result figures come from UK Parliament or the relevant returning officer. Expected-versus-surprise labels and trend notes are Road to 326 editorial judgements, based on the previous result, vote-share movement and the circumstances of each contest; they are not probabilities or official classifications.