Television advertising. It might be hard to believe, but there are way more low information voters than you might imagine. TV advertising is expensive too. Jeff Jackson (NC congressman, running for NC State AG after he was gerrymandered out of Congress) has done a great job addressing this in his short videos.
My uncle had a dog for about 10 years. Took him camping every weekend and would chill out by the truck all day. No issues. One random dog came up and peed on the truck tire once. Dog said “wait what you can do that?” and for the rest of his life pissed on the truck. It was a mindvirus.