Section 27 - Prohibition against certain public employment and political activities1. A member of a municipal civil service commission or personnel officer, appointed on or after the effective date of this act, shall not hold any other public office or employment under the political subdivisions or subdivision over which such commission or personnel officer exercises jurisdiction, for which he shall receive compensation other than necessary travel and other expenses incurred in the performance of the duties of such office or employment.2. A member of a municipal civil service commission or personnel officer shall not serve as an officer of any political party.