I’m just here to tell you that this is a very US centric view. I’m not from the US and, outside of random internet posts, there are no records of any of my political associations, past or present, and I’ve voted in all local and national elections for >20 years. Seeing as extremist forces are unfortunately currently gaining power over here, I REALLY wouldn’t want any type of public record even hinting at who exactly I’ve been voting for.
“They” don’t have that. Most labellers are user made and people can subscribe to them or not.