British Prime Minister Theresa May steps down as leader of her Conservative Party on Friday but will remain prime minister until a new leader is chosen.
May took office after the 2016 referendum vote to leave the European Union.
Brexit is still scheduled for Oct.31.
May has spent the past three years working on the plan but failed to deliver Brexit.
Eleven Conservative MPs are currently vying to replace her including former foreign minister Boris Johnson.
She finally acknowledged defeat in a tearful resignation speech last month.
The pro-European Liberal Democrats want to reverse Brexit.
Britain remains divided over the future of Brexit.