Damaging a candidate's reputation is commonly referred to as "defamation" or "slander" when spoken, and "libel" when written. This involves making false statements or spreading misleading information that harms the individual's character, credibility, or public image. Such actions can occur during political campaigns, often referred to as "negative campaigning," and can have significant legal and ethical implications.
This is called mudslinging.
slander (or libel, if the lies are written)
Defamation is speech that wrongfully damages a person's reputation. It includes both slander, which is spoken defamation, and libel, which is written defamation. To prove defamation, the statement must be false, harmful to the person's reputation, and communicated to a third party.
discredits
That is considered defamation or slander, which is the act of making false statements about someone that are damaging to their reputation. It can have legal consequences if proven in court.
false statement uttered with the purpose of damaging another's reputation
False speech intended to hurt another is called slander or defamation. This involves making damaging or false statements about someone with the intention of harming their reputation.
"Calumny" is a false statement uttered with the purpose of damaging another's reputation.
slander, which is lying about the opponent, also called political mudslingingpropaganda is to speak unfavorably and biasedly about someone
false and damaging to someone's reputation
I believe you are referring to Libel which can be defined as such: A published false statement that is damaging to a person's reputation; a written defamation. Verb: Defame (someone) by publishing a libel
Scurrilous = describes the making or spreading scandalous claims about someone with the intention of damaging their reputation.