You are right. The thing that bothers me is that Terrell has no turnout operation that I am aware of. She did not even have an office in New Orleans in the primary. In 1996, when he narrowly missed defeating Landrieu, Woody Jenkins had a huge phone bank in New Orleans which turned out a great vote both in the primary and in the general election. As far as I know, none of the veterans of this GOTV effort have been approached by the Terrell campaign to replicate the effort for her. I think it is absolutely essential to offset the shenanigans by Foster and Cooksey. I wish they would make this move and quit worrying about these endorsements.
I'm not sure how national help/efforts will play this time. I'm sure some will help but then too much may turn off the voters. I suspect the voters don't want to feel like they are being exploited by either side.