I've been reading this topic for years. It is very common with a certain party that the other side votes against their interest, or is too dumb to vote (literacy).
You can also see it in race voting, where people will say a certain race is voting against their interest just to vote for someone with the same skin color.
It's actually a talking point that actively pushes people away from their cause.
Does this type of voting happen? Sure, but not enough to push elections. IMO it's people who are confused on why others don't think the same way as they do and try to justify why anyway they can, usually through derogatory remarks.
You can also see it in race voting, where people will say a certain race is voting against their interest just to vote for someone with the same skin color.
It's actually a talking point that actively pushes people away from their cause.
Does this type of voting happen? Sure, but not enough to push elections. IMO it's people who are confused on why others don't think the same way as they do and try to justify why anyway they can, usually through derogatory remarks.