Voters went to the polls on Tuesday and cast their ballots for the mayor of Pittsburgh, the retention of three Pennsylvania Supreme Court justices and plenty of other key city, state and local races.

In the race for Pittsburgh's mayor, Democrat Corey O'Connor beat Republican Tony Moreno, the Associated Press projected on Tuesday night. O'Connor is set to take over for Ed Gainey, who lost to O'Connor in May's primary. The city hasn't had a Republican mayor since 1933.   

Voters decided all three Democratic justices will remain on the Pennsylvania Supreme Court for another 10-year term, according to a projection from the AP. Christine Donohue, Kevin Dougherty and David Wecht were the justices facing retention votes.

Polls closed at 8 p.m. in Pennsylvania. Here's a real-time look at the Pittsburgh mayoral election results and other races across the area.

Pittsburgh Mayor General Election

Pennsylvania Retention for Supreme Court Christine Donohue

Pennsylvania Retention for Supreme Court David Wecht

Pennsylvania Retention for Supreme Court Kevin Dougherty

Pennsylvania General for Commonwealth Court Judge

Pennsylvania Retention for Commonwealth Court Michael Wojcik

Pennsylvania General for Superior Court Judge

Pennsylvania Retention for Superior Court Retain Alice Dubow