Apparently it's a very uneducated Republican who follows the Trumpsters. He misspelled many words, sent one to the wrong TV network since the newsman he was aiming for worked at another network and in general used very unsophisticated means to build the bombs.
The best one I heard is that it is actually a nut-case Democrat trying to make Trump and the Republicans look bad just before the election. Most likely a Breitbart supposition.