Five councils across the region - Calderdale, Kirklees, Wakefield, Bradford and Barnsley - are holding all-out elections, while in Sheffield, Leeds and Hull a third of councillors are up for votes.

Voters have cast their ballots in the biggest set of polls since the 2024 general election, with Sir Keir Starmer’s future on the line.

More than 400 councillors are up for grabs across Yorkshire and the Humber, with Reform UK and the Green Party expecting to make serious inroads in traditional Labour territory.

Five councils across the region - Calderdale, Kirklees, Wakefield, Bradford and Barnsley - are holding all-out elections, while in Sheffield, Leeds and Hull a third of councillors are up for votes.

There are also votes for the Scottish and Welsh parliaments, as well as all 32 councils in London.

Results in Yorkshire could spell the end of Sir Keir. Labour currently controls seven of the eight councils up for election.

By Saturday night, when Bradford, the last council to declare, has finished counting, the Prime Minister’s party may be left with just one.

Hull City Council will be the first to declare, in the early hours this morning.

There is currently a Liberal Democrat administration, however Reform UK will be looking to eat into leader Coun Mike Ross’ majority.

The two other councils electing in thirds - Leeds and Sheffield - will declare their results in the early afternoon tomorrow.

In both cities, Labour is expecting to be squeezed by the Greens and Reform UK.

In Sheffield, leader Tom Hunt is hoping to hold onto his slim majority in Walkley.

In the Steel City, all eyes will be on Woodhouse where controversial Reform candidate Nathaniel Menday, who admitted he had “flirted with far right ideology” is standing.

Barnsley will be the first all-out council to declare at around 4pm tomorrow afternoon.

The results are expected to bring to an end Sir Steve Houghton’s 30 years as Labour leader of the borough.

Veteran local election watcher Lord Robert Hayward has said this is “archetypal Reform territory” and he expects “Labour to take a very serious mauling”.

Wakefield and Kirklees are both expected to declare around 6pm tomorrow. Reform is likely to dominate the east of Wakefield, particularly in Yvette Cooper’s seat, while the Greens are expected to do well in the city itself.

In Kirklees, the Greens and Gaza independents are expected to dominate and could even form the next administration.

Tomorrow, Calderdale will be the last council to declare, around 8pm, with Reform once again expected to be the largest party.

On Saturday, Bradford will become the final Yorkshire council to announce its votes, with Labour expected to lose power.

With several parties likely to have a similar number of councillors, negotiations about coalitions could continue over the weekend.

The Yorkshire Post understands that Cabinet ministers are prepared to quit to force out Sir Keir if the results are bad.

It comes amid rumblings of a potential leadership tilt by Wes Streeting, former deputy prime minister Angela Rayner Rayner or Greater Manchester Mayor Andy Burnham.

Allies of Ms Rayner are confident she would be able to gain the support of the 81 MPs required to launch a challenge – a number which Mr Streeting is also said to have met, though neither are said to want to be the first to move.

Labour sources suggested that the Parliamentary Labour Party (PLP) is said to favour Mr Burnham, although he would have several logistical obstacles to clear before even returning to Westminster should he seek to mount a bid for No 10.