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:
North Carolina The chair of each political party in the county shall have the right to designate two observers to attend each voting place at each primary and election and such observers may, at the option of the designating party chair, be relieved during the day of the primary or election after serving no less than four hours and provided the list required by this section to be filed by each chair contains the names of all persons authorized to represent such chair's political party. Not more than two observers from the same political party shall be permitted in the voting enclosure at any time. Persons appointed as observers must be registered voters of the county for which appointed and must have good moral character. (N.C. Gen. Stat. § 163‐45).
During the time allowed for voting in the voting place, only the following persons may enter the voting enclosure: an election official; an observer; a runner but only to the extent necessary to announce that runner's presence and to receive the voter list; a person seeking to vote in that voting place on that day but only while in the process of voting or seeking to vote; a voter in that precinct while entering or explaining a challenge; a person authorized to assist a voter but, except as provided in subdivision (6) of this section, only while assisting that voter; ,minor children of the voter under the age of 18, or minor children under the age of 18 in the care of the voter, but only while accompanying the voter and while under the control of the voter; persons conducting or participating in a simulated election within the voting place or voting enclosure, if that simulated election is approved by the county board of elections; any other person determined by election officials to have an urgent need to enter the voting enclosure but only to the extent necessary to address that need. (N.C. Gen. Stat. § 163‐166.3)
On the day of a primary or election, at the time a registered voter offers to vote, any other registered voter of the precinct may exercise the right of challenge, and when he does so may enter the voting enclosure to make the challenge, but he shall retire therefrom as soon as the challenge is heard. (N.C. Gen. Stat. § 163‐87).