I am a legal resident of another state so I am not a registered voter in New Orleans, so I could not vote. Well I guess I could have

but chose to be honest.
But I know tons of people in New Orleans. Here's some of the feedback that I got about this election. I made it a point not to post before the election as I didn't want to influence anyone's thoughts who might be voting.
Several people that I know and respect were vehemently anti-Nagin. Gave big money to Landrieu. They were absolutely convinced that New Orleans needed a change in leadership to be taken seriously by the rest of the country.
Even though people made fun of the chocolate remark, I don't know anyone who used that to decide to vote for Landrieu. Many people say felt that Mitch would have a better chance of getting state (he's been Lt. Gov.) and federal (his sister is a senator) funding.
General consensus from several people who know Landrieu personally is that he is a very, very nice guy but not the brightest bulb. (That's a very kind way of stating what was often said in more explicit terms).
Landrieu's father was a "colorful" mayor. Again - the nicest guy and I personally do not consider him a crook, but let's say he ventured into some grey areas financially. Morial, the mayor before Nagin, had a totally corrupt administration.
Landrieu made a point of saying that he would include Morial in rebuilding plans. I'm sure that was an attempt to attract AA votes but concerned many people that corruption would flourish, and Mitch might not be astute enough to prevent it.
Nagin is smarter than Mitch (for whatever that's worth). He was the most honest (if not competent) mayor in decades. I know personally of some of his efforts to root out corruption - including meeting with whistleblowers at 10pm in their homes, etc.
I think Nagin got votes from many who were concerned about possible corruption under a Landrieu administration plus he got the AA block. Half the people I knew said they might not make up their mind until they walked into the voting booth.