Election pundits will be pondering the wider significance of next Thursday's Glasgow North East by-election as parties' spin doctors rush to paint their own interpretations on a blank canvas.
The new constituency was created under boundary changes in 2005, since when its only MP has been Michael Martin, who ran as the Speaker - not a party candidate - in the last election with no Labour, Tory or Liberal Democrat runners.
This means no exact swing comparisons can be made.
