It is perhaps fitting that the Conservative Party is ending this parliament just as it has spent much of the previous five years: bitterly divided.

Reactions to Rishi Sunak’s shock decision to call a snap election range from astonishment to anger to grim resignation.

“No one sees the reason for the rush and feel like he has lost the plot,” one senior Tory told HuffPost UK. “None of us are ready for this.”

Support was also far from unanimous as the prime minister told his cabinet on Wednesday afternoon that he had decided to go to the country on July 4.

But the PM’s mind was made up, despite the fact that Labour remain 20 points ahead in the opinion polls and election experts all agree that the Tories are heading for a historic defeat.

One minister said most Tory MPs are simply resigned to their fate, and hit out at his malcontented colleagues.

He said: “In the tearoom I see cheerful stoicism all round. I suppose the whingers are the ones who prefer a leadership contest to a general election.”

Another MP was happily laying bets that the Conservatives will still emerge as the largest party in the Commons.

“I’m glad the phoney war is finally over and we can get on with the election,” the MP said. “We will fight for every vote.”

A senior Tory aide summed up the schizophrenic nature of MPs’ response to Sunak opting for a summer poll.

“A week ago they all wanted it over and done with and now they are furious it hasn’t gone longer,” he said. “I strongly suspect vast majority are resigned to fate and don’t feel that strongly about it.”

The sight of a bedraggled Sunak announcing the election date in the pouring rain outside No.10 has summed up the Tory campaign so far.

That gaffe was further compounded on Friday when the PM inexplicably visited Belfast’s Titanic Quarter, thereby linking him in voters’ minds with the world’s most famous sinking ship.

Nevertheless, Tory bosses want to run a presidential campaign, urging voters to stick with the man who bankrolled the government’s response to the pandemic rather than take a risk with the untried Keir Starmer.

The problem with that approach, however, is that voters already seem to have decided that they want Sunak and the rest of his government ejected from office as soon as possible.

Chris Hopkins, political research director at pollsters Savanta, said: “The prime minister already had a mountain to climb in this election, with a massive polling deficit and Labour leading them on every policy issue.

“On top of this, Sunak himself is hugely unpopular with the public, and based on our research, so are his most senior ministers.”

Polling done by the More in Common think-tank in the wake of the election announcement, shared exclusively with HuffPost UK, shows that only 29% of voters see Sunak as an asset to his party, compared to 46% who don’t.

Jenna Cunningham, More in Common’s research and data analyst, said: “There’s no doubt that Rishi Sunak was a popular Chancellor, especially after the furlough scheme, but questions remain about the effectiveness of the current presidential campaign strategy when only three in ten voters think he is an asset to the Conservative Party.

The general feeling among senior Labour figures is one of bafflement at Sunak’s decision to call an election now rather than wait until the autumn.

“I don’t understand the logic,” one adviser to Starmer told HuffPost UK. “If he’d gone for May he could at least have masked the local election results. Summer seems to be the worst of all worlds for them.

“It could be that the economic conditions are much worse than they thought they were and Rwanda isn’t going to work as well, so he’s decided they couldn’t hang on any longer. But you can see why Tory MPs are furious about it.”

One word we are all going to be sick of hearing over the next six weeks is “change”. It was on Starmer’s lectern as he responded to the PM’s announcement and will be emblazoned on thousands of Labour posters on the run-up to polling day.

“It’s very important that voters know that the only way to end the chaos of the last 14 years is to vote Labour,” said one party stretegist.

“The fact that the Tory campaign has so far been so chaotic – his ludicrous speech in the pouring rain and their MPs all saying he shouldn’t be doing it – just helps us to reinforce that message.”

At the moment, Labour’s main opponent seems to be complacency.

“We’re going to fight this campaign as if it’s still neck and neck,” said one insider. “We will be fighting to win day by day, week by week

“We need to fight as if the polls don’t exist.”

Rishi Sunak has been accused of “running scared” after he finally ruled out a genera election on May 2.

The prime minister told ITV West Country that voters across the UK will not have to go to the polls “on that day”.

It brings to an end months of speculation and means the election is almost certain to take place in the autumn.

Senior Labour figures, and many Tories, wanted the general election to coincide with the local council polls in England and Wales on May 2.

But Sunak said: “In seven weeks’ time we have local elections, including in Gloucester where I was talking to them today. We have police and crime commissioner elections, we have mayoral elections.

“I’m squarely focused on those because they’re important and there’s not going to be a general election on that day.”

Liberal Democrat leader Ed Davey said: “It looks like we have confirmation of Sunak running scared of an election in May.

“He knows that voters will not put up with this Conservative government’s failures on the NHS and the cost of living crisis any longer.

“That is why lifelong Conservative voters have switched to the Liberal Democrats in their droves and will vote for a hardworking local champion, rather than another Conservative MP who will take them for granted once again.”

Pat McFadden, Labour’s national campaign co-ordinator, said: “After 14 years of Tory failure, the British public have the right to expect an election to be called by 26 March and held on May 2.

“Until the day to call it has passed, we are prepared for the election to take place on the usual day in the election cycle.

“Rishi Sunak should stop squatting in Downing Street and give the country what it desperately needs – a chance for change with a Labour government. The rime minister needs to finally come clean with the public and name the date of the election now.”

Sunak’s announcement means the election is likely to take place in either October or November, although he could go all the way to January next year.