Electorate: 73,465
Oliver Dowden is the MP for Hertsmere. Check out Oliver Dowden's Record on Climate.
From recent opinion polls, VoteClimate estimates that if a general election happened today, the result in Hertsmere would be as follows.
Based on predicted vote shares (GB): Reform: 27% | Labour: 18.8% | Conservative: 18.3% | Green: 14.5% | Liberal Democrat: 12.2%
[Last updated: June 2026]
For our full forecast of the next general election, please see our Electoral Analysis.