I think that is a sign that many liberals are seeing through the left's scheming. We know that many have moved to supporting Trump in the recent polls, but there is another chunk that are just waffling and wobbling in the middle. I bet those ones have mostly stopped donating to liberal causes.
So if fewer people are donating, the con-artists have to put out more appeals for cash to keep their piggy banks stuffed. After all, you get not brownie point from Satan for working like one of the sheep, no matter how high your salary is. So you need to trick the marks into giving you money because every dollar that you con out of a schlemiel is a brownie point from Satan himself.