Speaking at a televised meeting with his political party allies, Duterte, 76, who is not permitted to seek a second term as president, said he was "touched by the outpouring of sentiment" urging him to run for vice president.

"To the proposition that I run for vice president, slightly I am sold to the idea. Meaning to say, I am seriously thinking of running for vice president," he said.

He last month said the vice presidency was a "good idea" because he has unfinished business, like fighting illicit drugs.

The mercurial former mayor's critics have questioned the legality of him becoming vice president, because he could reassume the top post if the president dies, resigns, or is removed from office.

Opinion polls show Duterte remains hugely popular, despite a huge death toll in his notorious anti-drugs campaign and criticism of his government's pandemic response.

Staying in office could also shield him from legal action, in a country where former leaders and politicians are often prosecuted, sometimes jailed.

Duterte, however, admitted he would be an "inutile" vice president if the winning president, who is elected in a separate contest, was not a "friend".

Duterte's daughter, Davao mayor Sara Duterte-Carpio has topped opinion polls on possible presidential contenders. Both Duterte's have ruled that out.

He stopped short of endorsing longtime aide and incumbent senator, Christopher "Bong" Go, as his preferred successor, but said Go was "ready" for the top post. Go said he was not interested.

Absent during the party meeting was boxer-turned-senator Manny Pacquiao, who has been in Duterte's crosshairs over public comments on foreign policy and corruption, amid speculation the eight-division champion may seek the presidency.

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