Scottish Labour's new top team will be revealed later.
Jim Murphy, Neil Findlay and Sarah Boyack are all standing to replace Johann Lamont as leader.
While Kezia Dugdale and Katy Clark are hoping to succeed Anas Sarwar as deputy.
Former Scottish Secretary MP Jim Murphy is widely seen as the frontrunner to take the fight to Nicola Sturgeon, with most politicians backing him
But Neil Findlay's support from the unions - which proved crucial in Ed Miliband becoming UK leader - suggests the vote could be close.
Whoever takes charge will face an SNP buoyant mood despite independece being rejected.
The Nationalists are now the UK's third largest party with over 93 thousand members, and some polls suggesting they could claim dozens of Labour seats in next year's general election.
The winner is due to be announced in Glasgow this morning.
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