The Labour leader described the general election result as 'very disappointing'.
The SNP are on course to win 55 seats, up 20 and their second best result of all time.
All the Scottish party leaders are out on the campaign trail ahead of Thursday's election.
Denise Findlay was expected to investigate general election candidate Neale Hanvey.
All the main UK-wide parties have now revealed their pitches to voters ahead of December 12.
Politicians will seek to win over Scotland's voters as they gear up for the general election.
An Ipsos MORI survey found 44% of voters will pick Nicola Sturgeon's party on December 12.
The party is pledging 'no to indyref2' as its pitch to voters ahead of the December 12 poll.