British foreign minister Jeremy Hunt on Tuesday said the draft withdrawal deal agreed by Prime Minister Theresa May with the EU in November needs to be renegotiated.
Adding that the Irish backstop could be changed, he said it would be "political suicide" to pursue a no-deal Brexit through a general election.
"Trying to deliver no deal through a general election is not a solution; it is political suicide," Hunt wrote in Tuesday's Daily Telegraph.
Hunt added that he would look for more time to secure a new Brexit deal if he replaced May.
"A different deal is, therefore, the only solution – and what I will pursue if I am leader."

Thai teen kills 7 in rampage at home and school before shooting himself
US appeals court blocks Trump’s $400 million White House ballroom project
Spain dismantles one of Mediterranean's largest human smuggling networks
Syria says bomb on minibus near Damascus wounded 14, deaths reported mistakenly
Spain hopes to transfer migrant minors to mainland within weeks
