The Commission on Elections today proclaimed Geraldine Roman winner of Monday's election in the first district of northern Bataan province.
Roman, who takes over a congressional seat previously occupied by her mother, said she is happy to have survived the humiliation and attacks on her gender by political opponents during the campaign.
The former editor of a Spanish news agency said she hopes her story will inspire the LGBT community and show the need for compassion in society.
Roman said her experience showed that the "politics of hatred, bigotry and prejudice did not prevail" and "what prevailed were acceptance, love and tolerance."
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Once in the House of Representatives, she said among the bills she will work to pass are those on education, health care, agriculture, transparency in government and anti-discrimination.
Boxing great Manny Pacquiao, who was member of the House but who appears to have won a seat in the Philippine Senate based on the unofficial count, had angered the LGBT community and their supporters when he said in February that people in same-sex marriage are "worse than animals." He later apologised to people hurt by his comments but made clear he opposed gay marriage.