Monroe Nichols will become the first Black mayor of Tulsa.

Nichols, a state representative, edged out Tulsa County Commissioner Karen Keith in a runoff election to become the mayor of Oklahoma’s second largest city.

Nichols’ election comes 103 years after the Tulsa Race Massacre, when a white racist mob, including some deputized by authorities, descended on the city’s Greenwood District, also known as Black Wall Street. They burned down homes and businesses, resulting in the deaths of an estimated 75 to 300 Black residents.

Nichols, who ran on a platform of adding more affordable housing and ending homelessness in the city, spoke from the stage of the Greenwood Cultural Center.

“If there is anyone out there that questions whether Tulsa is a place where big things are possible,” Nichols said, “If there’s anyone out there that doubts that you can make an impact, tonight you got your answer.”