From the earlier article linked in this one:

> Why does he care? For two reasons, Rosenberg told the Meidas Touch Podcast.

> “The reason it matters is a couple things,” he said. “One, is it demobilizes [voters]. When we think we’re losing, we demobilize, our voters disengage. Money dries up, right? The same is true for them, if they think they’re losing. So they want to give Donald Trump and Republican voters a belief the election is better than it really is.

> “The second thing, though that’s important, is that it is vital to Trump’s effort: If he tries to cheat and overturn the election results, he needs to have data showing that somehow he was winning the election. ... Donald Trump needs to go into Election Day with some set of data showing him winning, so if he loses, he can say we cheated.”