Scottish Labour has warned that "murky internal politics" cannot be allowed to derail the race to find the next First Minister.
Jackie Baillie has written to SNP chief executive Peter Murrell and SNP president Michael Russell to ask several questions about the voting process the party will use to elect a replacement for Nicola Sturgeon.
The Scottish Labour deputy leader claimed the Nationalists had a "long track record of secrecy and cover-up" which raised questions about their "ability to conduct this race fairly and honestly".