All you have to do is look at the results from the notoriously crooked Orleans (New Orleans) Parish. The Democrat Incumbent received 114,000 votes and the Republican received 13,000. That voted alone was almost 3 times the margin of victory. I wonder how many Orleans Voters were bussed to polling places to vote multiple times?
Read where Edwards won because blacks came out to vote and gave him the win. 87% black vote.