Similar to Cambell's Law, it is a social rule where if something is implied in a repetitive/habitual manner, it will eventually become the implication.
Ballard's Law can be the repetitive use of a political party name such as Democrat or Republican as an insult to invoke shame to the receiver of the phrase/statement it is used in.
"Of course you think doxing is okay, you're a democrat."
"You're such a republican, you shouldn't like guns, they kill!"