I didn't say it was electricity. But to say negative charges repel is bullshit. Negative charges hold the universe together, and prevent positively charged electrons from repelling each other too much.
I have a bachelors degree in electrical engineering and I almost got an ice cream headache reading those sentences.
First off, if you are talking positive and negative charges, what might you be referring to if not electricity?
Secondly, charges either attract or repel. But they don't have anything to do with what 'holds the universe together'. That is accomplished via gravity, through its affect on matter, and through the strong nuclear force (gluons) that are a constituent of neutrons that prevent positively charged protons from flying apart.
Incidentally, positively charged electrons are called 'positrons'.