Democrats are packing inside the Wells Fargo Center for Tuesday's roll call vote to nominate Hillary Clinton for president.
Tuesday's big night will be punctuated by former president Bill Clinton as well as some notables from Michigan. Detroit Mayor Mike Duggan and Flint Mayor Karen Weaver will both be speaking, but what do Philadelphians know about Detroit?
Not a lot.
Charlie Langton quizzed the people of Philadelphia on everything from sports to politics.
Watch it in the video player above.