Reform UK has announced that councillor Siobhan Monaghan will stand as the party’s candidate for the Cheshunt South and Theobalds ward in the upcoming local elections. Residents will head to the polls on 7 May 2026 to vote for members of the Broxbourne Borough Council.
Councillor Monaghan has represented the ward since 2018. She was originally elected as a Conservative councillor and served in the council’s cabinet before leaving the party to join Reform UK in February 2025. Upon her defection, the councillor stated she had become increasingly frustrated with the direction of the country and its impact on local and national levels.
The council currently holds 30 seats. Following the recent resignation of a councillor, the upcoming election will see 11 seats contested, including the by-election for the vacant seat. The current political composition is 25 Conservative, three Labour, and two Reform UK, with one vacancy.
This will be the final election held under the existing local government structure in Broxbourne. Following the 2026 vote, Hertfordshire is set to undergo a major reorganisation that will replace current district and county councils with new unitary authorities by 2028.
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