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:
Michigan At an election, a political party or an incorporated organization or organized committee of citizens interested in the adoption or defeat of a ballot question being voted for or upon at the election, or interested in preserving the purity of elections and in guarding against the abuse of the elective franchise, may designate challengers as provided in this act. A political party, incorporated organization, or organized committee of interested citizens may designate not more than 2 challengers to serve in a precinct at any 1 time. A challenger shall be a registered elector of the state (Mich. Comp. Laws § 168.730).
An election is an open process that may be observed by any interested person. A person who wishes to observe the election process -- who is not a qualified election challenger -- is commonly called a “poll watcher.” (Michigan Secretary of State, The Appointment, Rights, and Duties of Election Challengers and Poll Watchers).
At an election, a political party or an incorporated organization or organized committee of citizens interested in the adoption or defeat of a ballot question being voted for or upon at the election, or interested in preserving the purity of elections and in guarding against the abuse of the elective franchise, may designate challengers (Mich. Comp. Laws § 168.730).
An election inspector shall challenge an applicant applying for a ballot if the inspector knows or has good reason to suspect that the applicant is not a qualified and registered elector of the precinct, or if a challenge appears in connection with the applicant's name in the registration book. A registered elector of the precinct present in the polling place may challenge the right of anyone attempting to vote if the elector knows or has good reason to suspect that individual is not a registered elector in that precinct. (Mich. Comp. Laws § 168.727).