Grace Poe, 46, is a relative political novice, having been a senator for just two years, and faces legal challenges over her citizenship that could rule her out of the election next May.
But the independent politician is already the favourite, capitalising on a starstruck electorate with a colourful history of electing celebrities to all manner of political positions - from village level to the presidency.
Thousands of supporters clad in white cheered and blue confetti rained down as Poe announced a long list of campaign promises including fighting poverty, untangling chronic traffic jams and defending the country's interests in the disputed South China Sea.
"Join me in building a new dawn, a better tomorrow for our motherland, the Philippines."
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The senator has in public appearances adopted the blue-collar style that nearly got her father elected president in 2004, wearing a crisp white shirt over jeans as she toured the country pressing the flesh before today's announcement.
Her movie star father Fernando Poe, who himself had no political experience, narrowly lost to Gloria Arroyo in 2004 amid allegations he was cheated of victory. He died of a stroke seven months later.
Poe's declaration will set the stage for a three-way race against Vice President Jejomar Binay and Interior Minister Mar Roxas, who is President Benigno Aquino's anointed successor.
A recent respected public opinion survey had Poe leading her two rivals, with 30 per cent saying they would vote for her. Binay, whose early lead was eroded amid corruption allegations, got 22 per cent while Roxas had just 10 per cent.
"We are moving away from personality-based politics," he said Monday.
Poe's rise to frontrunner in the race to lead 100 million people is as dramatic as her parents' biggest hits.