Emily Thornberry has been heavily criticised for telling the BBC that losing the West of England mayoral election by 5,000 votes was a "fantastic result" for Labour.
The shadow foreign secretary made the comments after both Labour and UKIP suffered tough nights in the local and mayoral elections.
Thornberry suggested the West of England was not natural Labour territory, a comment which has also brought anger from Labour supporters on Twitter.
Tory Tim Bowles was elected West of England Metro Mayor, but Labour upset the odds laid by Ladbrokes before the election by pushing the Lib Dems into third place.
Elsewhere, in the local elections, the Tories have made significant advances, gaining Warwickshire, Derbyshire, Lincolnshire, and taking control of the Isle of Wight.
The party has thus far managed to retain control over its strongholds in Essex and Somerset, amongst other places.
The Liberal Democrats have managed to retain most of their seats, but failed to break the Tories' hold over Somerset.
Meanwhile, UKIP faces a near-complete wipeout, having failed to retain any seats thus far.