Magpantay oversees AALDEF's Asian American Election Protection efforts in fifteen states across the Northeast, Mid-Atlantic, and Midwest. In 2004, he coordinated the nation's largest exit poll of Asian Americans, surveying over 11,000 voters in 23 cities. He is a recognized authority on the federal Voting Rights Act and Asian American political participation, including bilingual ballots, election reform, minority voter discrimination, multi-lingual exit polling, and the census.