MSPs are expected to back a call for Westminster to hand over powers to allow a second independence referendum.
The First Minister wants Westminster to make a Section 30 order and grant the Scottish Parliament the authority to permit the vote to take place.
Successive UK governments have dismissed repeated calls from SNP first ministers for a second referendum, with Sir Keir Starmer the latest Prime Minister to rebuff such demands.
The vote went down party lines with a majority calling on Westminster to pass the powers to Holyrood for another independence referendum.
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