This week’s two by-elections had something for everyone – except Rishi Sunak’s Conservatives.

Sir Keir Starmer’s Labour Party has now broken into the record books with six by-election gains from the Conservatives, beating New Labour’s performance in the run-up to the 1997 Election.

Reform UK got more than 10% of the votes in both constituencies.

The Liberal Democrats lost two deposits, with less than 5% of votes cast each time. But even they have something to celebrate, according to one polling analyst.

Peter Kellner argues that their four by-election victories over the Tories since 2019 show that they are much better at concentrating their vote than they used to be – when they regularly clocked up 10% plus support across the country with nothing to show for it.

Reform could be falling into a similar trap with significant minority support spread nationwide, enough to damage the Conservatives without a sniff of winning a seat.

No wonder Nigel Farage is talking about “uniting the centre-right vote” of Conservatives and Reform, without committing himself personally to fight in the approaching general election.

Jacob Rees-Mogg has taken up the call for the two right-wing groupings to come together.

Conservative MP Dame Andrea Jenkyns has leapt on the by-election defeats in Kingswood and Wellingborough to renew her call for Sunak to be replaced.

The prime minister must be wondering why his MPs keep inflicting damage on their party through their own behaviour.

All six of Labour’s by-election gains were precipitated by voluntary or forced resignations by Conservative MPs.

The tables will be turned in the next by-election in just 10 days’ time, when Labour is defending the constituency of Rochdale in Lancashire and the party is certain to be the victim of a technical knock-out because it no longer has a candidate.

Starmer’s discomfort in Rochdale and the continued agony of political death by many by-election cuts explain why there is growing speculation that the prime minister may call the general election sooner rather than later in the year, as he has suggested.

Rochdale is an unholy mess for Labour, which exposes one of the most painful divisions in the party.

Labour has held the seat since 2005. Tony Lloyd, who died last month, held it in 2019 with more than half the votes cast.

In its haste to make the best of a sure thing, Labour rushed to hold the vote to find a replacement MP.

Azhar Ali, a local council big wig, was chosen quickly as the Labour candidate. Too quickly, it turns out.

The Mail on Sunday and then The Daily Mail exposed comments about the Israel-Gaza conflict which he had made at Labour gatherings, in clear violation of party policy.

Ali had embraced conspiracy theories that Israel allowed the 7 October attacks to happen and made accusations about Jewish influence in the media.

He later issued an “unreserved” apology, saying the comments were “deeply offensive, ignorant, and false”.

After an agonising weekend when Labour leaders tried to keep Ali as their official candidate, he was cut loose along with the candidate in neighbouring Hyndburn for similar comments.

It is easy to see why Starmer was reluctant to act. Nominations for the Rochdale by-election had closed.

Labour was stuck with Ali on the ballot paper as their candidate, come what may. It was too late to select a substitute.

Labour must sit it out for the remainder of the campaign, as Ali presses on as an independent. If he wins, he will not receive the Labour whip.

This will automatically exclude him from being the Labour candidate at the approaching general election.

The party leadership could then impose Paul Waugh as the Labour candidate.

In a move which surprised many, Waugh gave up a career as a top political journalist to stand for selection in this by-election – unsuccessfully as it turned out.

This awkward outcome is probably the best that Labour can hope for.

Two controversial ex-Labour MPs are also standing in the by-election.

Simon Danczuk won Rochdale for Labour in 2010 and then 2015. But he was suspended from the party shortly afterwards for sexting a 17-year-old girl. This time, Danczuk is standing for Reform UK.

The candidacy of George Galloway is of much greater concern.

Since his first election in 1987, Galloway has been an MP in four constituencies: Glasgow Hillhead/Kelvin for Labour, and Bethnal Green & Bow, and Bradford West, for the Respect Party.

Galloway is pugnacious and articulate, and he specialises in fighting highly charged by-elections.

He is highly litigious and willing to take on his critics. He takes a close interest in the Middle East and is pro-Palestinian.

There have been allegations of antisemitism against him – claims he has strongly denied and even once labelled “outrageous”.

Roughly a third of the population in Rochdale has a Muslim background. As Ali’s comments showed, the Israel-Gaza conflict has already inflamed passions.

Opinion polls show that a clear majority of the British public does not take sides in the current conflict.

Of the remainder, around 20% each sympathise with Israel and the Palestinians. But the balance among Labour activists favours the Palestinians.

Rooting out the antisemitism which characterised Labour during Jeremy Corbyn’s far-left leadership is one of Starmer’s signal achievements.

Rough justice has meant that figures such as Corbyn, Diane Abbott and now Ali have been kicked out of the party.

But tensions have mounted as Israel’s high-casualty counteroffensive continues.

Read more from Sky News:
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In the past, Labour has benefitted from strong support in British Pakistani and Bangladeshi communities. In a handful of constituencies, this has been decisive.

Starmer is not pleasing many in his party by lining its Middle East policy up close to the government’s own position.

The Conservatives certainly are not going to give him any credit for backing them up.

Even without the divisive return of Galloway, Conservatives are already saying that the developments in Rochdale reveal that it is the same old Labour Party underneath, for all the changes supposedly wrought by Starmer.

Rochdale means chronic by-election pain for Starmer. There is no end to agony in sight for Sunak either.

There is another by-election in the offing in Lancashire in the marginal constituency of Blackpool South

The Commons Standards Committee has recommended a potentially by-election-triggering 35-day suspension for the Conservative MP Scott Benton over lobbying and corruption allegations.

Voters do not like by-elections in grubby circumstances. They are inclined to punish the incumbent, but the reputation of all politics takes a hit.

The excuses Sunak gave this weekend for the Tory defeats in Kingswood and Wellingborough do not stand up.

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With the general election imminent, these were not “midterm by-elections”. Nor was turnout exceptionally low for such contests. The exception was the massive scale of the drop in the Conservative vote.

The quickest way to make it stop would be to call that general election.

In the past few days, keen observers report an upsurge in activity by those involved in running the Tory campaign.

While Starmer is mired in Rochdale, a giveaway budget on 6 March as the springboard to a May election must remain a distinct possibility – before it gets any worse.