The 49-year-old will become her country's first openly trans person to hold public office, securing the congressional seat in Bataan previously held by her mother, Herminia Roman.
Roman, who transitioned more than two decades ago, will set a precedent in a country where lesbian, gay, bisexual and transgender (LGBT) people only enjoy limited rights. Still, she'll now join an elite group of trans pioneers who've held various elected offices around the world, including Venezuela's Tamara Adrián, Poland's Anna Grodzka and Luisa Revilla Urcia in Peru.
Take a look at 12 history-making transgender politicians from around the world.
(Note: The list below uses "transgender" as an umbrella term to include many different transgender expressions and lives but it should be noted that different countries, cultures and communities may use other more specific terms to describe those experiences.)