Wilhelmino Sy-Alvarado

He entered politics when he was elected as mayor of Hagonoy, Bulacan in 1987. He served as mayor of that town for three consecutive terms.

Upon finishing his term as mayor, he ran for congressman of First District of Bulacan in 1998. He won by a landslide victory the same year, where he served in the House of Representatives for nine years.

In the 2007 elections, Alvarado teamed-up with former governor Roberto Pagdanganan. His wife, Ma. Victoria ran to keep his seat in the Congress. Although Pagdanganan lost to Joselito "Jonjon" Mendoza, brother of then-governor Josefina Mendoza-Dela Cruz, he and his wife were successful.

Prior to the 2010 local elections, he voluntarily retired from vice-governorship to run for governor. He challenged with former governor Josie Dela Cruz for the seat at the provincial elections. It was also during the gubernatorial feud between Roberto Pagdanganan and Jonjon Mendoza. His running mate was former board member and actor Daniel Fernando. In the elections, he won over Dela Cruz. In 2013, he ran unopposed. In 2016, he was re-elected, defeating Dela Cruz and San Miguel Mayor Roderick Tiongson.

Prior to the 2019 local elections, he switched places with incumbent vice-governor Daniel Fernando and ran for vice-governor as they are both term-limited; Fernando and Sy-Alvarado won the elections respectively, beating incumbent Malolos City mayor Christian Natividad and incumbent Bocaue councilor Josef Andrew Mendoza.