I guess the states and locales can do whatever they want but congresscritters are federal elections and there should be NO variance at all IMO....set hrs...set counting ...every precint reporting then and there and no more "found" ballots.....ballots under lock and key with a pub/rat there to guard them. or perhaps the sheriff, but in Broward what good would that do...
and before any "provisonal" ballots are submitted and counted, the names are cross matched on a national register.....
with hi speed computers that shouldn't be a big problem...