The leader of the Scottish Conservatives will be announced on Friday.
Russell Findlay, Murdo Fraser and Meghan Gallacher are on the ballot paper, with one of the three set to take over from Douglas Ross in Holyrood.
The field narrowed from six to three after Brian Whittle, Jamie Greene and Liam Kerr dropped their bid for the top job.
Polls closed for Scottish Tory members – of which there are believed to be around 7,000 – at noon on Thursday, with the result due to be announced at around 10am on Friday.
Whoever takes on the top job will inherit a difficult legacy from Mr Ross, who was driven out of the role following his decision to stand in the Aberdeenshire North and Moray East seat at Westminster in place of former MP David Duguid, who was recovering from a spinal stroke.
The decision irked MSPs and party members after Mr Ross had previously said he would stand down from Westminster to focus on Holyrood. He was forced to announce in the midst of the general election campaign that he would quit as leader after polling day.
The newest incumbent will also face a punishing first few days.
As well as an intense media round following the announcement on Friday, a ceremony to mark the 25th anniversary of devolution is being held at the Scottish Parliament on Saturday, with the new leader due to join others in making a speech before the King and Queen.
Within 24 hours, they will need to head to the Conservative Party conference in Birmingham, where they will undertake a number of engagements.
Appointments of their frontbench team are expected to take place next week.
Elections expert Professor Sir John Curtice told the BBC’s Good Morning Scotland radio programme on Friday that the leadership election had been “fractious”, after a period when the party has seen its support fall away in the two years running up to the election.
Sir John said: “We’re talking about a party that has got just over 12.5% of the vote in the general election, its worst performance ever.”
Why are you making commenting on The National only available to subscribers?
We know there are thousands of National readers who want to debate, argue and go back and forth in the comments section of our stories. We’ve got the most informed readers in Scotland, asking each other the big questions about the future of our country.
Unfortunately, though, these important debates are being spoiled by a vocal minority of trolls who aren’t really interested in the issues, try to derail the conversations, register under fake names, and post vile abuse.
So that’s why we’ve decided to make the ability to comment only available to our paying subscribers. That way, all the trolls who post abuse on our website will have to pay if they want to join the debate – and risk a permanent ban from the account that they subscribe with.
The conversation will go back to what it should be about – people who care passionately about the issues, but disagree constructively on what we should do about them. Let’s get that debate started!
Callum Baird, Editor of The National
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here