Former vice-president Joe Biden beat out Vermont Sen. Bernie Sanders by just 56 votes in the city of Boston last Tuesday and was the top vote getter in both Dorchester and Mattapan, according to unofficial election results reviewed by the Reporter.

In Dorchester, Biden won 33 out of the 60 precincts in the neighborhood. He won a plurality of precincts in Wards 14, 16 and 17. He also won all but 3 of 23 precincts that cover Mattapan and Hyde Park and mounted bigger-than-average margins over his closest rivals in precincts where people of color are the dominant demographic.

Biden also won the higher-numbered precincts in Ward 16, traditionally a base of white, more conservative voters in Neponset.

Elizabeth Warren, the senior US Senator from Massachusetts, finished third in the capital city and overall across the state. She won only three precincts in Dorchester.

Sanders performed far better locally. He won 25 precincts in Dorchester and was the top vote getter in two wards: 13 and 15.

Citywide, Biden finished with 43,210 votes to Sanders’ 43,154— roughly 30 percent each. Warren finished the night in third position with 39,188 votes— or 27 percent. Former New York Mayor Michael Bloomberg finished a distant fourth with 11,878 or 8 percent.

According to preliminary numbers from the city’s Election Department, 144,200 ballots were cast in Boston last Tuesday, a turnout of roughly 34 percent citywide.