Rishi Sunak is the favourite to be the next British Prime Minister, closely followed by Boris Johnson.
It's expected Johnson will try to take back the job he lost just months ago.
To get to the next round in the Tory leadership contest hopefuls must secure the backing of at least 100 MPs
The race to do that is on and while Rishi Sunak seems to have a lead, many Tory MPs including Sir Christopher Chope are saying Bring Back Boris.
Tony Blair's former advisor Alistair Campbell says that would be a terrible idea.
The Government here is making no comment while privately hoping for Rishi Sunak
People Before Profit TD Richard Boyd Barrett doesn't think it will be Boris Johnson
The deadline to get those 100 backers is Monday.