It looks like Democrats may have written off Louisiana and the December runoff.
According the the article quoting inside sources the national party has largely cancelled ad buys of almost 2 million dollars. The consensus seems to be that since control of the Senate is decided and since incumbent Mary Landrieu will be a minority party member there is less chance of getting many donations to pay for the ads.
The fact that she only got 42% is also bad given that most of the rest of the vote was Republican, so turning people around would be tough (those who didn’t vote for the GOP candidate Cassidy voted mostly for a more conservative Republican)