is the incumbent. She will face Roberto Pagdanganan. Malolos was supposed to have its own representation in the House of Representatives, but was ruled unconstitutional by the Supreme Court for the city did not have enough population to be given separate representation. Malolos residents will continue to be represented as a part of Bulacan's 1st district.
Special election
The COMELEC ruled that candidates that contested the Bulacan-1st and Malolos will contest the seat. Aniag and Domingo withdrew prior to the election, while independents Cruz and Valencia did not campaign.
2nd District
is the incumbent. He will face 2007 challenger and former three-term Guiguinto, Bulacan mayor Ambrosio "Boy" Cruz Jr.
3rd District
Incumbent Lorna Silverio is in her third consecutive term already and is ineligible for reelection. She will run for mayor of San Rafael and her husband, Ricardo Silverio, Sr. will run for her seat. His opponents are his son, Ricardo Silverio, Jr. and the current governor of Bulacan - Joselito Mendoza.
4th District
is in her third consecutive term already and is ineligible for reelection.
Malolos
With the issue on Malolos' separate congressional district from Bulacan's 1st district resolved with finality, an election will be scheduled to elect the representative for Bulacan's 1st district, including Malolos." Voting for Malolos' congressional district was continued. The results:
All 4 Districts of Bulacan will elect Sangguniang Panlalawigan or provincial board members. The first and fourth districts sends three board members each, while the second and third districts sends two board members each. Election is via plurality-at-large voting; a voter can vote up to the maximum number of board members his district is sending. The Liberal Party won seven out of the ten partisan seats in the provincial council, with Lakas Kampi CMD winning two, and the Nacionalista Party winning one; only the Liberals and Lakas-Kampi parties fielded complete lineups in the provincial board elections. An additional three more members will be selected from the provincial chapter of the barangay captains, Sangguniang Kabataan, and the sectoral representative.
Summary
1st District
2nd District
3rd District
4th District
Mayoralty elections
All cities and municipalities of Bulacan will elect mayor and vice-mayor this election. The candidates for mayor and vice mayor with the highest number of votes wins the seat; they are voted separately, therefore, they may be of different parties when elected. Below is the list of mayoralty candidates of each city and municipalities per district.