Campaigners believe they have councillors on the ropes in Lambeth, south London.
Labour Party members are ramping up the pressure on their own party’s councillors.
Last week yet another local Labour Party ward meeting voted against the council’s plan to close local libraries and cut the service.
Library workers were also expected to announce strikes as Socialist Worker went to press.
An unofficial walkout last year was hugely popular.
A protest was planned at the next full council meeting on Wednesday evening of this week.
Fighting dismissals at Glasgow Life
Five sacked workers from Glasgow Life, a Glasgow City Council-owned company, are taking their case to an employment tribunal.
The five were dismissed last year for alleged wage claim irregularities.
Two other workers have been dismissed and have their internal appeals against dismissal pending.
They all worked at Tollcross Pool, in the east of the city, and are members of the Unison and GMB unions.
One insider said, “This is a terrible injustice. The workers have been stitched up and made scapegoats by Glasgow Life senior management for their own failings.”
The tribunal, expected to last ten days, opens in Glasgow on 15 February.