Curious how mail ballots are processed? Take a look.

Workers began counting mail ballots at Philadelphia’s election warehouse on Roosevelt Blvd early Tuesday morning.

Election results will take longer to report after officials voted Tuesday morning to reinstate a process that can catch possible double votes from being counted. The change means that ballots still left to count after Tuesday night — numbering in the low tens of thousands — will instead be counted and reported in a slow trickle over the rest of the week.