Kate Gallego, a former Phoenix city councilwoman, is officially the third woman to hold the position of the Mayor of Phoenix.

The election was held to replace Mayor Stanton who resigned last summer to make a successful run for Congress. In the run-off election Gallego led Daniel Valenzuela, her fellow city council member, by approximately 21,000 votes after the polls closed.

“I’m going to work as hard as I can to be a mayor for everyone, whether they voted for Daniel or for residents who voted for me,” Gallego said at her victory party at Crescent Ballroom.

“I look forward to working with the business community, the faith community, the nonprofit community — if we’re going to build the city of the future, we’re all going to need to work together.”

Gallego will be sworn into office on March 21 and will remain in the seat until 2021, when former Mayor Greg Stanton’s term is set to expire.

Gallego has made history as the third female mayor in the city’s history after Margaret Hance and Thelda Williams. She is also the first Phoenix mayor with a Hispanic surname. Gallego, whose maiden name is Widland, was married to U.S. Rep. Ruben Gallego, but they are now divorced.

Republican Moses Sanchez and Libertarian Nicholas Sarwark, Gallego and Valenzuela, originally ran for the seat in November. However, the runoff election was triggered when none of the candidates reached the required 50 percent threshold needed to win the election.

Gallego campaigned on a platform that included prioritizing public safety, job creation and infrastructure investments.