Voting patterns have shown that one does not have to actually be alive to be a democrat
Or live in the district. Seriously.
I think it was the True the Vote organization that started looking at voter registration in Lee's district, and found large clusters of voters at a handful of addresses.
They went to look at the addresses, and they were vacant buildings, vacant lots, or houses too small for the number of alleged residents.
The reasons for the phenomena is an exercise for the reader.