Voters across Chicago are heading to the polls Tue. to vote in the city's contentious mayoral runoff race.

Who's on the ballot? Former Chicago Public Schools CEO Paul Vallas and Cook County Commissioner Brandon Johnson.

Vallas and Johnson were the top two vote-getters in Feb.'s election, defeating incumbent Mayor Lori Lightfoot. (AP)

Vallas led the nine-candidate field by 11.2 points in Feb., winning 32.9% of the vote. (NYT)

Johnson trailed Vallas in second place with 21.6% of the vote. (NYT)

Who is Vallas? Vallas is the former CEO of Chicago Public Schools; he also served as a budget director for the city. (AP)

Vallas previously ran for mayor in 2019, but lost to Lightfoot in ninth place. He also ran for governor in 2002. (BCC)

Vallas has been endorsed by the Fraternal Order of Police. (BCC)

Who is Johnson? Johnson is a member of the Cook County Board of Commissioners. (AP)

Johnson has the endorsements of the Chicago Teachers Union and United Working Families. (AP)

What do the polls say? According to a March 27 Emerson College poll, Vallas is leading Johnson by six points with 53%.

As of Fri., 195K+ people have voted in the runoffs so far. (NBC5)