N.J. Stat. § 14A:5-16
Shares held by two or more persons as joint tenants or as tenants in common may be voted at any meeting of the shareholders by any one of such persons, unless another joint tenant or tenant in common seeks to vote any of such shares in person or by proxy. In the latter event, the written agreement, if any, which governs the manner in which such shares shall be voted, shall control if presented at the meeting. If there be no such agreement presented at the meeting, the majority in number of such joint tenants or tenants in common present shall control the manner of voting. If there be no such majority, or if there be two such joint tenants or tenants in common, both of whom seek to vote such shares, the shares shall, for the purpose of voting, be divided equally among such joint tenants or tenants in common present.
N.J.S. § 14A:5-16