Chris Thomas is the new member of the House of Keys.
He won the Douglas West by-election with 676 votes, with his closest rival John Skinner nearly 300 votes behind.
Clive Dawson was third in the polls, while Quintin Gill came fourth.
Turnout in the election was rather poor, with only 39 per cent of the constituency voting.
Mr Thomas had this to say in his winning speech live on Manx Radio:
Remainder of TT 2026 cancelled
Race organisers confirm no more racing at this year's event
TT 2026: Further two-hour delay confirmed
Conditions around the course 'need to improve sufficiently'
Mountain Road closed 'with immediate effect'
'Due to current significant pressures on emergency services'
TT 2026: Organisers provide updates on rider conditions
Three riders 'conscious and stable' following Friday incidents
Drivers left confused as Telecabs seemingly ceases trading overnight
"This announcement has come out of the blue"