Only Mr. Harris, an Irish minister in the cabinet, ran for the party leadership.
Leo Varadkar, the party’s leader and taoiseach, said on Wednesday that he was stepping down. He is going to replace him.
Becoming the head of Fine Gael, according to Mr. Harris, is “the honour of my life.”.
He promised to “repay that trust in hard work” after expressing gratitude to the party and the voters for their confidence in him.
“This is a moment for Fine Gael to reset; it is a moment for Fine Gael to reconnect,” Mr. Harris subsequently stated to the members.
It is anticipated that Mr. Harris will not finalize his cabinet selections until the Irish parliament, or Dáil, reconvenes on April 9.
On Sunday at 13:00 local time, nominations for the Fine Gael leadership were closed.
When the nominations closed, he was the lone applicant for the job.
After other ministers who were thought to be possible rivals declared themselves out, Mr. Harris, the Irish minister of further and higher education, had an obvious shot at the top position.
Among those endorsing Mr. Harris were Ministers Helen McEntee, Paschal Donohoe, and Heather Humphreys.
