The president-elect is the person who has been elected as the president of an organization or country, but who has not yet taken office.
...one of the president-elect’s best proposals during the campaign.
N-SING
PRESIDENT-ELECT
Meaning of PRESIDENT-ELECT in English
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006