If you made a donation, or signed a petition, that could be how your name passed form one list to another.
...And after this latest election season, if you donated to any Democrat, it wasn't surprising to see other campaigns showing up with emails in your inbox. With requests of their own. It's just anecdotal, but I think the more donations you made the more likely you were to get all kinds of appeals.
The timing for this Black Friday boycott is really good. Just a couple of days ago, revelations about international bribery charges were made: