Let's start with the basics - victory in the Hamilton, Larkhall and Stonehouse by-election is a good result for Scottish Labour.
Their position in the polls has slipped considerably since last year's general election and they've often found themselves on the defensive when it comes to controversial UK Labour policies, such as cuts to winter fuel payments.
Despite all that, they've taken the Holyrood seat from the SNP.
This result will be a massive boost to party activists, politicians, and leader Anas Sarwar.