Twenty-seven other people have been wounded in violence linked to election rivalries, mostly in shootouts, national police spokesman Senior Superintendent Reuben Theodore Sindac said.
At least 588 people have been arrested for violating an elections gun ban, with police confiscating nearly 500 firearms, 4,000 rounds of ammunition, 191 knives and 68 grenades.
Fifteen people were killed in village election violence in 2010, Sindac said.
"Our elections in the past have always been marred by untoward incidents," military spokesman Lt Col Ramon Zagala said, adding that government forces would guard against "spoilers to this democratic exercise."
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More than 800,000 candidates are vying for chairmanships and other posts in urban and rural villages, locally called barangays the Philippines' smallest political units, where violence and fraud are as much a concern as they are in elections for higher office.
Police arrested the son of a candidate for village chairman and 16 other supporters, some of them armed with shotguns and pistols, for allegedly threatening a rival candidate in southern South Cotabato province, police said.
In the country's worst election violence, 58 members of a political clan and media workers were ruthlessly shot to death in a 2009 massacre allegedly plotted by a rival clan with its armed militias to maintain their political control over southern Maguindanao province.