The difference here is that voting is compulsory and a much bigger part of the population can barely read, let alone judge more complex situations.
In the US, the "stupid" (as you call them) voters can stay at home if they are uninterested in the election. In the very least, this makes the voters be more involved.
Here, a lot of people only remember they need to vote when they try to buy beer on the Saturday before the election and they can't or when they turn the TV to watch their soap operas and see the mandatory political programs instead (and turn it off instead of watching).
Yes, and they will vote on the person that had the biggest budget on their campaign most of the time, because that's the person they will see on the television or outdoors. A lot of the corruption in Brazil is for stealing money to spend on political campaigns.
In the US, the "stupid" (as you call them) voters can stay at home if they are uninterested in the election. In the very least, this makes the voters be more involved.
Here, a lot of people only remember they need to vote when they try to buy beer on the Saturday before the election and they can't or when they turn the TV to watch their soap operas and see the mandatory political programs instead (and turn it off instead of watching).