Voter turnout for the Copeland by-election has been confirmed as 51.35 percent.
The figure has exceeded expectations, with many suggesting Storm Doris would put people off heading to the polling stations.
London's Labour mayor said there's lessons to be learned from his party's defeat in the Copeland by-election.
The Conservative party have ousted Labour, from a seat they had held for decades. Trudy Harrison won a majority of more than 2,000.