Ed Miliband is running out of time to confirm he would work with the SNP at Westminster, Nicola Sturgeon has warned ahead of tonight's Scottish leaders' debate.
The SNP leader told supporters in Livingston every day that passes risks perpetuating the suspicion that Miliband would rather see the Conservatives return to government than work with her party.
"Even if the Tories are the largest party, I have said we will vote to stop the Tory government getting off the ground," Sturgeon said.
"I have asked Ed Miliband to confirm that Labour will do likewise. Thus far, Labour hasn't given that commitment.
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