Suella Braverman has won a contest against backbencher Flick Drummond to continue as an MP, in what has been dubbed as the "Battle of Waterlooville".
The two Conservatives went head-to-head for a new proposed constituency of Fareham and Waterlooville, which will be created due to boundary changes in the Hampshire area.
Ms Braverman, the home secretary, won a vote of eligible local Tory party members by a slim majority of 77 to 54.
"I am honoured and humbled to have been adopted by Conservatives members to be their Parliamentary Candidate for the new Fareham and Waterlooville constituency," Ms Braverman wrote on Twitter.
Ms Drummond said she was "incredibly disappointed" by the election result but said she would "continue to be Meon Valley MP" until the next election, a position she has held since 2019.