Many organizations (both SuperPACs and "charities") aren't included there. It's believed that Republican groups are probably out-spending Democratic ones but be

Many organizations (both SuperPACs and "charities") aren't included there. It's believed that Republican groups are probably out-spending Democratic ones but because a lot of that advertising is done by groups that are supposed to be charities, they don't have to reveal what they spent or where they got the money from.