The parties have until 4pm to confirm their candidates for the general election, with the Tories desperate for an 11-hour deal with Nigel Farage.
In the hours before the deadline, the Conservatives are expected to pressure Brexit party leader not to enter candidates in the margins.
But to the dismay of Boris Nonson and his allies, Mr Farage has so far stood firm, refusing to make further concessions to the 317 candidates he already stood for in the 2017 Tory seats.
The Daily Telegraph reports that after Mr Farage announced his withdrawal on Monday, the Conservatives offered him an election pact, which means the Brexit party will have only 40 key seats.
The prime minister was said to be ready to put "paper candidates" in the margins of Labor, with the Tories only conducting minimal campaigns to give advantage to their Brexit party rivals.
But according to the newspaper, the deal was rejected by Mr Farage, who said Tory should withdraw its candidates because he was worried they would still attract votes.
"I would stop at many key margins in return for a few on the other side," Farage told the Telegraph. "I would not even ask for 40. It would have guaranteed the majority leaving the parliament and they refused to do so.
"It's totally crazy. I told them, "I can beat you in the general election now," and they chose not to use that option. "
With a deadlock, the Brexit party is determined to contest these key margins of Labor that Mr Johnson needs to defeat to win a majority. It is understood that 270 candidates for the Brexit party have already submitted their nomination papers.
For the two major parties, Labor and the Conservatives, in the final hours before the nominations close, there will be a large number of candidates pushed from their party headquarters to the constituencies that have not yet been selected.
In moves that will provoke outrage among many election activists, these candidates are almost certain to be loyal leaders – in some cases party officials – with local candidates pushed aside.
And, there is still no official confirmation that the prime minister is defending his seat in Uxbridge and South Ruizip, where the majority is only 5,034, instead of moving to a much safer place on Tory.
On the day they were nominated before the election, the electoral battleground is moving towards immigration, with Tories claiming labor policy could see net migration rise to 840,000 a year and equal pay, with Labor pledging to close the gender pay gap.
Home Secretary Prity Patel argues that Tory's analysis of Labor proposals for open borders – using official figures and the government's own methodology – would mean the equivalent of the combined population of Manchester and Newcastle, which relocates to the UK each year.
"Under Corbin's effort, immigration will grow and cause a great deal of effort on our schools and our NHS," Ms Patel said. "Jeremy Corbyn has no credible plan on how to deal with the consequences of his open borders policy."
More worrisome about labor, Mr Corbin's union chief, Lenn McCullough of the United, told The Guardian that labor must take a strict line for free movement of workers.
Before the conference this weekend to agree on Labour's manifesto, Mr McCluskey said the party must prevent wages and conditions from being cut before it can consider relaxing its stance.
"It's not okay for me to have more free movement of labor, unless you get tighter regulation of the labor market," he told The Guardian.
Meanwhile, in the wake of the campaign, Labor has pledged to close the gender pay gap – which now sees women paying an average of 13% less than men – within a decade.
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Two of Mr Corbyn's most loyal allies and rising partygoers, Laura Piedoch and Zoran Butler, unveil a 10-point plan, including penalizing employers and raising maternity pay.
Proposals start on the day of equal pay, when women effectively stop paying for the rest of the year compared to their male counterparts, according to the campaign.
The pledge also comes ahead of next year's 50th anniversary of the Equal Pay Act, introduced by the Caribbean castle after an equal strike by Ford's sewing machines, immortalized in the film "Made in Dagenham".
Set a goal of closing the gender pay gap by 2030, the party's proposals include:
- Living for a salary of 10 pounds per hour
- Financial organizations that do not report gender pay, announce plans to reduce the gap or take satisfactory measures to close the gap
- Extension of legal maternity payment from nine to 12 months and introduction of free childcare for all 2-4 years
- Stronger protection against unfair dismissal and redundancy, with additional rights for pregnant women
- Utilizing sectoral collective bargaining to raise salaries across the sector
- National pay scales in low-paid sectors with a huge workforce for women
- Menopause workplace policy in large companies
"For too long, the interests of working women are at the bottom of the government's list of priorities," said Ms Piedcock, secretary for employment rights.
"Employers will no longer be able to treat the gender pay gap as an end. Instead, they are expected to take proactive steps to close it. "
"Labor will bring about the real change that women need in the workplace."
Ms Butler, secretary for women and shadow equality, added: "It is not good enough that under the current government's plans, it will take another 60 years to close the gender pay gap.
"The real paycheck, the robust gender pay audit – including penal organizations that do not take action – will help us deliver real change and fulfill this ambitious goal."
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