Career
She has been Mayor of Watford since May 2002, being re-elected in May 2006, May 2010 and May 2014. She was nominated for a life peerage in August 2015. In May 2002, Dorothy Thornhill became the first elected mayor of Watford Borough with a majority of over 8000 after counting second choice votes.
Thornhill increased her majority when she was re-elected as mayor in May 2006, gaining more than 50% of the vote in the first round, with a majority of over 7000.
Thornhill was ranked the 41st most influential Liberal Democrat in the country, in an article by the Daily Telegraph. They stated:
"Dorothy Thornhill overcame tough opposition to become the first directly LibDem mayor in 2002 and she was re-elected in 2006.
Watford is a target seat for the "LibDems" at the next election and her tenure as mayor will prove crucial to their fortunes. "
Thornhill was re-elected as Mayor of Watford in May 2010, for a third term in office, with a majority of 11,921, becoming the second directly elected mayor in the United Kingdom to do southern
Thornhill lost a legal battle to evict allotment holders from the Terrace Farm allotments in Watford.
Thornhill stood in the Parliamentary elections on 7 May 2015 as the Liberal Democrat"s candidate. On 21 October 2015, she was created a life peer as Baroness Thornhill, of Watford in the County of Hertfordshire.