of N.J.S.A. 40:45B-3. That section provides:
Every person appointed by the governing body or by the Governor to fill a vacancy, either for the unexpired term or temporarily, shall *439 have the qualifications required by statute to permit the appointee to qualify for election to said office, and if the previous incumbent had been elected to office as the nominee of a political party, the person so appointed shall be of the same political party.
The facts are not in dispute as to the past and present political party affiliations of the holders of the now declared vacant seats and the various candidates. The candidate who achieved the highest number of votes and who undisputedly won one of the two vacant seats was not an incumbent. The two seats whichbeam and the electron beam to the identical lens system by the use of the magnetic deflection means. With this construction, therefore, it is difficult to remove the deflection distortions of the respective beams. As a result, it becomes difficult to project the ion beam and the electron beam on an identical place. Moreover, since the hybrid lens uses parts of the electrodes of the magnetic lens and the electrostatic lens in common; the principal planes of both the lenses are substantially in agreement. As a result, in a case where such hybrid lens is used as an objective lens, the working distance between the electron beam and the ion beam cannot be varied largely.
In contrast, the construction in which the electron beam and the ion beam are