Sunak won the two previous televised debates, according to snap polls, and the second one featured a no-holds-barred clash with Truss.
Rishi Sunak will claim credit for steering Britain's economy through the COVID-19 crash but must overcome accusations that he is too rich and too willing to raise taxes to win the race to be the next prime minister.
Former finance minister Rishi Sunak and foreign secretary Liz Truss will battle it out to become Britain's next prime minister after they won the final lawmaker vote, setting up the last stage of the contest to replace Boris Johnson.
Britain's former finance minister Rishi Sunak again topped the latest vote by Conservative MPs to choose a new prime minister, as another candidate was eliminated to leave three contenders in the race.
MPs will keep voting until only two candidates remain, the winner then being decided by the party members.
A top Bank of England official pushed back on Monday at suggestions from a leading candidate to become Britain's next prime minister that the government should set a "clear direction of travel" for monetary policy.
The five Conservative contenders still vying to be Britain's next prime minister clashed over tax cuts in a second televised debate on Sunday, with the two frontrunners - Rishi Sunak and Liz Truss - stepping up their battle on the economy.
The debate has ripped open Conservative tensions about the direction of economic and environmental policy under whoever succeeds Johnson.
British foreign minister Liz Truss clashed over tax policy with former finance minister Rishi Sunak on Friday, as the five remaining contenders to be Britain's next prime minister went head-to-head in the first of three televised debates.
Sunak, who supported Brexit during the 2016 referendum, earned millions in finance before politics, and his Indian wife Akshata Murty's father co-founded the IT giant Infosys.
Former finance minister Rishi Sunak cemented his lead over rivals to become Britain's next prime minister on Thursday in an increasingly bitter race to replace Boris Johnson.
Half a world away from the political drama in London, many Indians are closely following the twists and turns of who replaces Boris Johnson as British prime minister, curious to see how two candidates with Indian ancestry fare.
Margaret Thatcher has not been in power since 1990.
Johnson is staying on in Downing Street as prime minister until the internal party contest finds his successor. The result is due on September 5.
Promises of tax cuts from candidates to succeed British Prime Minister Boris Johnson pose another inflationary risk which could pressure the Bank of England to raise interest rates more aggressively, cancelling out any potential boost to the economy.
Nominations will officially open and close on Tuesday, with a new prime minister set to be installed when parliament returns from the summer break
Johnson announced his resignation as party chief on Thursday, after a cabinet uprising over scandals culminating in his appointment of an ally with a history of sexual assault allegations to a senior role.
British former finance minister Rishi Sunak said on Friday he was running to replace Boris Johnson, three days after helping to launch the cascade of resignations that brought the prime minister down.
The likely months-long campaign, potentially pitting more than a dozen Conservative MPs and multiple factions of the ruling party against each another, is set to be formalised Monday.
The early favourite is former finance minister Rishi Sunak, who launched his campaign Friday after helping to kickstart the cabinet revolt that led to Johnson's forced resignation
The contest to replace British Prime Minister Boris Johnson gathered pace on Sunday as five more candidates declared their intention to run, with many pledging lower taxes and a clean start from Johnson's scandal-ridden premiership.
The former leader had been delivering a stump speech at an event ahead of Sunday's upper house elections when the apparent sound of gunshots was heard
Russian politicians lined up to celebrate the downfall of Boris Johnson on Thursday, casting the British leader as a "stupid clown" who had finally got his just reward for arming Ukraine against Russia.
G20 foreign ministers head to a joint summit on Friday that will put some of the staunchest critics of Russia invasion of Ukraine in the same room as Moscow's top diplomat, in the first such meeting since the war started in February.
While the European Commission publicly dodged commenting about the political upheaval in the UK, others in Brussels' orbit let loose.
Alexander Boris de Pfeffel Johnson had a conventional rise to power for a Conservative politician: first the elite Eton College, then Oxford University.
Former British Prime Minister John Major said Boris Johnson should be replaced immediately rather than be allowed to remain as a caretaker leader because his cabinet may struggle to "restrain him", amid wider calls for him to be removed now.
Boris Johnson will announce his resignation as British Prime Minister on Thursday, a government source said, after he was abandoned by ministers and his Conservative Party's lawmakers who said he was no longer fit to govern.
Within a little over 24 hours, 43 ministers and their Tory MP aides had quit, mostly from more junior positions outside the cabinet, while Gove was sacked.
British Prime Minister Boris Johnson was clinging to power on Wednesday, after ministers quit the cabinet following a scandal over whether Johnson's office told the truth about sexual harassment allegations against a lawmaker.
