Do you also only think that crimes happen only if it gets reported? Meaning if 50 burglaries happen to 100 people but only 2 people reported it, does that mean the burglary rate is 2% or 50%? This is why I don't bother with these worthless metrics as I'll explain in the next paragraph regarding trump.
Did you ever wonder why a lot of people don't publicly come out as trump supporters? They have very liberal friends that they don't want to lose because they said they'd vote for trump. That sentiment still lingers here. Most leftist people who argue against trump vehemently do so in a way that these regular folk that end up voting for trump keep it under wraps because they're too scared to publicly say anything.
Just because the "numbers" shrank, doesn't me the actual voters did. There is a lot of societal pressure involving politics and only on the left is it worthy of breaking a friendship over. This is why many white liberals who voted trump keep their mouths shut.