I haven't answered because I'm not yet sure how much alleged interference there has been in Trump election, or Brexit, and whether what CA have done once they got the data is not legal.

But i did find the following article a few days ago. It was written almost a year ago. It's a long article and i don't know how much truth there is in it, but it points to some dodgy activity.

Only just found out how to copy a link on my
old phone so hope it works ....

https://www.theguardian.com/technology/2017/may/07/the-great-british-brexit-robbery-hijacked-democra...