There has been much discussion about whether votes in this next election will be counted securely.
Every state has rules about what poll observers can do at the polls and how votes can be challenged. Here are the rules for your state:
New Jersey The chairman of the county committee of any political party that has duly nominated any candidate for public office to be voted for at an election by all the voters within the county or any political division thereof greater than a single municipality, or where the election is within and for a single municipality only, or any subdivision thereof, then the chairman of the municipal committee of the political party making such nomination within and for such single municipality, or subdivision thereof, may appoint two challengers for each election district in the chairman's county or municipality, as the case may be. (N.J. Stat. Ann. § 19:7-1).
No person shall be allowed or permitted to be present in the polling place or polling room during the progress of the election except the officers connected with the election, persons connected with the operation of a simulated election for minors, the several candidates, the duly authorized challengers, such voters as are present for the purpose of voting and their dependent children, minors present for the purpose of voting in a simulated election, and such officers as may be duly detailed to be present, for preserving the peace or enforcing the provisions hereof. (N.J. Stat. Ann. § 19:15-8).
The members of the district boards and any duly authorized challenger, respectively, shall at any election challenge every person who shall claim to have a right to vote therein whom they or he shall know, suspect or believe not to be qualified or entitled to so vote, and said members of the district board or challenger shall have the power and right to ask all questions which are suitable and necessary to determine such person's right. (N.J. Stat. Ann. § 19:15-18. Also see 19:15-18.1, 18.2)