Want to become a poll watcher? Those people on social media aren't poll watchers. There are steps. You just don't show up and say, Hey, I'm a Poll Watcher. Let's take Pennsylvania:
POLLWATCHERS (25. P.S. §2687)Poll watchers are registered voters in the county who have been appointed by a party or candidate to observe at the precinct.
•Watchers must be identified in advance and assigned to specific precincts. Watchers receive a credential from the county Board of Elections and must present the credential upon demand.
•Each party is entitled to appoint three watchers per precinct and each candidate is entitled to appoint two watchers per precinct.
•The watcher must be a registered voter of the county in which the watcher is appointed. Typically, party watchers may watch at any precinct in the county. Candidate watchers can watch in any precinct in which the candidate is on the ballot.
•Watchers allowed in the polling place are permitted to keep a list of voters. Because of this, election officials must clearly and audibly announce the name of every voter who appears to vote. •Watchers allowed in the polling place are among the persons entitled to challenge the qualifications of voters on the permitted grounds, i.e. identity and residency. See “Challenges” below.
•During times when voters are not present in the polling place, watchers are permitted to inspect the poll book and the numbered lists of voters but they are not permitted to mark or alter those documents in any way.
•Watchers may not engage voters or otherwise interfere with the orderly process of voting.Watchers should direct all challenges and other comments directly to the Judge of Elections who is the official in charge at the polling place.
https://www.dos.pa.gov/VotingElections/OtherServicesEvents/Documents/DOS GUIDANCE ON RULES IN EFFECT AT THE POLLING PLACE ON ELECTION DAY 10-16.pdf
Learn how things work, use the internet, use legit sources. A guy name TrollaSaurus is not a legit source.
https://www.eac.gov/election-officials/poll-watchers