Truss's lagging rival Rishi Sunak vied to make up lost ground with a plan for future tax cuts – and potentially to fund a future women's soccer World Cup in the United Kingdom after England's "Lionesses" won the European championship.

Truss attended Sunday's final against Germany, and the first victory by any England soccer team in a major tournament since 1966 wiped Sunak's long-term tax slashing plan off all the front pages except The Daily Telegraph.

The Conservative party contenders were going head to head later on Monday in a members' hustings, in the southwestern city of Exeter – the second of 12 such events before the winner is announced on Sept. 5.

Sunak, a polished debater, needs to recapture momentum after Truss steamed into a strong polling lead on a platform of immediate tax cuts to address the UK's worst cost-of-living crisis in generations.

Chancellor of the Exchequer Nadhim Zahawi joined other luminaries of Boris Johnson's cabinet in backing the foreign secretary against Sunak, his predecessor in the Treasury.

"Liz understands that the status quo isn't an option in times of crisis," Zahawi wrote in the Telegraph, attacking Sunak's plan to prioritize fighting inflation now, before cutting taxes later.

"We need a 'booster' attitude to the economy, not a 'doomster' one, in order to address cost-of-living woes and the challenges on the world stage," the new chancellor said.

Sunak's resignation from Johnson's scandal-tainted cabinet helped spark a ministerial exodus that forced the prime minister out last month.

As they began receiving postal and online ballot forms, a large chunk of the roughly 200,000 Tory members are said by pollsters to nurse a grievance against Sunak – one shared by Johnson.

The prime minister is not formally taking sides, but has told aides that he intends to give his successor some words of advice, "whoever she may be", the Sunday Times reported.

'Distasteful, even dangerous'

Despite her endorsements from the likes of Zahawi, Defense Secretary Ben Wallace, Northern Ireland Secretary Brandon Lewis and Tory centrist Tom Tugendhat, Truss has warned against complacency.

Heading into the Exeter hustings, the foreign secretary has markedly improved in her sometimes-robotic public delivery – seen most notoriously in a 2014 speech when she was environment secretary.

Returning to her former field, the Remainer-turned-Brexit zealot promised over the weekend to "unleash" farmers from European Union regulations to improve the UK's food security.

Truss also promised to tackle labor shortages in agriculture, partly caused by post-Brexit restrictions on immigration, which have forced UK farmers to leave fruit rotting in fields and to slaughter healthy pigs.

And Truss unveiled a plan on education, vowing that all school students with top grades would automatically get an invitation to apply for Oxford, Cambridge or other prestigious universities.

Both Truss and Sunak went to Oxford – in her case after attending a state school in the northern city of Leeds that she says let too many pupils down by failing to push them to excel.

Both the contenders have stressed the need for unity once the election is out of the way, aware that the opposition Labor party is riding high in the polls amid the economic crisis and political tumult of Johnson.

But their supporters have not been holding back, especially combative Truss ally Nadine Dorries.

The culture secretary retweeted an image portraying Johnson as Julius Caesar, being stabbed in the back by Sunak.

Last year, Conservative MP David Amess was stabbed to death by an Islamic State group follower.

In view of that, Dorries' retweet was "distasteful and even verging on dangerous", Sunak supporter Greg Hands told Sky News.

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