Well, it’s not evidence, but haven’t they won every election they’ve been hired to manipulate?
I especially find the way they did it in Trinidad interesting. They set up an anti establishment movement saying “don’t vote” which grew into actual grass roots. They targeted it at everyone, because their data showed, that one side of the political spectrum would still vote, despite participating in the movement. At the election their predictions came completely true and only one side refrained from voting.
What worries me is that CA is just one company. Now that the cat is out the bag, everyone is going to do this.