Voters are going to the polls in a by-election to choose a new MP for the Airdrie and Shotts constituency.
Polling stations will open on Thursday morning in the North Lanarkshire seat in the race to replace incumbent SNP MP Neil Gray.
Gray stepped down to contest the same seat in the Scottish Parliament election, and became an MSP last week.
The two elections were not held on the same day due to concerns about coronavirus and the possibility of voter confusion because of the different ballot systems used in Westminster and Holyrood elections.
Gray held the seat for the SNP in the 2019 general election, taking 45% of the vote, with Labour coming second on 32%. This gave the SNP a majority of 5201 votes.
Modern studies teacher Anum Qaisar-Javed is the SNP candidate, facing Labour councillor Kenneth Stevenson.
First Minister Nicola Sturgeon campaigned in Airdrie and Shotts with Ms Qaisar-Javed on Wednesday, alongside the SNP’s Westminster leader Ian Blackford.
Scottish Labour leader Anas Sarwar was also on the campaign trail on Wednesday with Mr Stevenson.
The other candidates standing for the seat are Stephen Arrundale, Scottish Liberal Democrats, Ben Callaghan, Scottish Conservatives, Martyn Green, Reform UK, Donald Mackay, UKIP, Neil Manson, Social Democratic Party and Jonathan Stanley for the Scottish Unionist Party.