Jason Moorhouse has topped the poll in Arbory, Castletown and Malew.
He will be joined in the Keys by former Manx Radio journalist Tim Glover.
The results mean that the Minister for Justice and Home Affairs, Graham Cregeen, who has been an MHK since 2006, has lost his seat. He came bottom of the poll.
The results:
Graham Cregeen: 730
Steve Crowther: 1,488
Tim Glover: 1,818
Jason Moorhouse: 1,988
Turnout 56.4%, down from 60% in 2016.
The results:
Graham Cregeen: 730
Steve Crowther: 1,488
Tim Glover: 1,818
Jason Moorhouse: 1,988
Turnout 56.4%, down from 60% in 2016.