Rishi Sunak and Liz Truss are battling head to head in the race to become the next leader of the Conservative Party and Britain's new prime minister.
Both candidates made it through a series of MPs' ballots to enter the final two, but it is now Tory Party members who will decide their fate in the final ballot later this summer.
On Monday night, they clashed in their first TV debate, with Ms Truss accusing her rival of being a new Gordon Brown.
As they take part in a series of hustings and debates, they will be vying to set out their stalls and convince members that they have the answers to some of Britain's most urgent questions, including the cost-of-living crisis and the Ukraine war.
Here, The Telegraph takes a look at the final two contenders and their publicly declared backers:
Rishi Sunak - 137 backers
Why he is running?
The former chancellor is pitching himself to the party and members as the serious candidate on the economy, who can guide the country through a potential recession by resisting calls for tax cuts.
Significant figures publicly supporting Sunak:
Lord Lamont
The endorsement of Lord Lamont, Margaret Thatcher’s treasurer, was a massive boon to Mr Sunak’s camp. As leadership hopefuls competed to demonstrate their Thatcherite credentials, the Tory grandee’s intervention undoubtedly lent legitimacy to Mr Sunak’s plan to prioritise tackling inflation before cutting taxes.
Dominic Raab
The Deputy Prime Minister was quick to pledge his support for Mr Sunak and was rewarded by introducing him at his campaign launch. Securing the backing of the second most senior Cabinet member gave an early boost to the campaign.
Jeremy Hunt
After the former health secretary crashed out at an early stage of the leadership contest, he got behind Mr Sunak, saying he has the “highest standards of integrity” of all the candidates.
Grant Shapps
Another leadership hopeful at the start of the race, the Transport Secretary lent his support to Mr Sunak, highlighting his early support for Brexit and his “seminal” pamphlet on freeports.
Rehman Chishti
After briefly running for the top job himself, the MP for Gillingham and Rainham swiftly got behind Mr Sunak, saying that his “brilliant” experience as chancellor will be “vital” for tackling the cost-of-living crisis.
Oliver Dowden
The former Conservative party chair, who resigned last month in the wake of the double by-election defeat, was quick to throw his support behind Mr Sunak.
Odds: 5/2
Liz Truss - 113 backers
Why she is running?
Ms Truss is marketing herself as a Thatcherite who promises tax cuts, foreign policy experience, and a track record of delivery.
Significant figures publicly supporting Truss:
Jacob Rees-Mogg
The Brexit Opportunities minister backed Ms Truss, saying she is a “strong Brexiteer” and a “proper Eurosceptic” who had always supported him in Cabinet.
Nadine Dorries
Enlisting the support of the Culture Secretary and staunch Boris Johnson loyalist cemented Ms Truss’s place as the “Boris continuity” candidate.
Kwasi Kwarteng
The Business Secretary was yet another Cabinet heavy-weight to back Ms Truss and was charged with the duty of introducing her at her official launch, where he called her a “true blue, tax-cutting Conservative”.
Iain Duncan-Smith
The former Tory Party leader remains an influential figure as he heads up the 'One Nation' caucus of MPs which represents the more moderate wing of the party.
Suella Braverman
Just hours after the Attorney General was knocked out of the leadership race, she pledged her support for Ms Truss and encouraged at least some of her followers to go with her, notably Steve Baker MP.
Simon Clarke
Securing the backing of the chief secretary of the Treasury - who had worked under Mr Sunak - was a helpful endorsement to Ms Truss’s economic vision
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