Jim Murphy and Kezia Dugdale are leading the race to take over the leadership of the Scottish Labour Party.
A total of 27 MPs and MSPs have nominated Mr Murphy, MP for East Renfrewshire, to take over from ex-leader Johann Lamont next month.
Elgin-raised Ms Dugdale, who was first elected as a Lothians MSP in 2011, received 29 nominations to replace Anas Sarwar as deputy leader.
Politicians backing Mr Murphy, who was first elected to Westminster in 1997, include Aberdeen South MP Anne Begg, north-east MSP Richard Baker, Better Together chief Alistair Darling and Shadow Foreign Secretary Douglas Alexander.
A total of 11 party members have nominated Neil Findlay for the leadership while 10 are backing local government spokeswoman Sarah Boyack, MSP for the Lothians.
Ms Boyack’s supporters include north-east MSP Lewis Macdonald and Highland and islands MSPs Rhoda Grant and Dave Stewart, who have also nominated Ms Dugdale.
A total of nine politicians have nominated North Ayrshire MP Katy Clark to be the next deputy leader.
The new leaders will be elected through an electoral college system which is in effect three separate ballots, each worth a third of the vote.
The ballots involve MPs, MSPs and MEPs, party members and members of affiliated trade unions and affiliated societies.
Mr Findlay, a Lothian MSP first elected in 2011, has secured the backing of Scotland’s largest public sector trade union Unison and train drivers union Aslef.
Nominations closed yesterday, the ballot starts on November 17 and the new leader will be announced on December 13.