I don't envy Landrieu. She desperately needs nearly 100% of the black vote and about 30% of the white vote to carry Louisiana and she has been struggling to get either. And now one of the most polarizing figures in American politics shows up and endorses her.
This may engergize some blacks, but it will more than likely energize the whites to vote against her in masses.
She needs to realize that it's breakfast time and she's toast.