What works for me is Buddy Tape (preferred because it breaks less) or Parafilm (the 1/2" wide nursery version) on the first layer to seal the graft, followed by 1/2" white, vinyl tape (A.M. Leonard has it and it's cheap) to apply the pressure in the places that others are using rubber bands. Very clean when all is said, and done the you can label the free end of the white tape with a permanent marker with the variety grafted and the date. Those simple labels last for as long as a year or more, but should be replaced with something more permanent when you are positive the graft has taken.
Removing electrical tape sounds like it has the potential for problems. Buddy Tape, Parafilm, and grafting tape are all readily available on the internet and work great. The regular old green nursery tape is fine, too, instead of the grafting tape, but is slightly harder to work with than the thinner, white vinyl grafting tape.