UK Election Explorer
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May 2026
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Turnout
Parties
By-elections
Hertsmere
12th Dec 2019
UK Parliament
Results
2019
1
Con
Oliver Dowden
32,651
62.5%
▲ 1.4
2
Lab
Holly Kal-Weiss
11,338
21.7%
▼ 7.0
3
LD
Stephen Barrett
6,561
12.6%
▲ 7.3
4
Grn
John Humphries
1,653
3.2%
▲ 1.3
Previous Results
8 June 2017
Con
Oliver Dowden
★
31,928
61.1%
Lab
Fiona Smith
14,977
28.7%
LD
Joe Jordan
2,794
5.3%
UKI
David Hoy
1,564
3.0%
Grn
Sophie Summerhayes
990
1.9%
