Oh definitely. I wasn't trying to imply this is the situation in Belarus and I apologize if it came off that way, just that poll watching (like most things) can be used for both good and for evil, so it important to make sure there are safeguards in place for the latter.
One of those safeguards is just having more poll observers.
Of course, most of the time in functioning democracies it's going to be a lot more boring than that -- in my personal experience you just say hi to your counterparts from other organizations and then watch in silence as everything runs smoothly according to the rules.
EDIT: it should without saying that observers not being allowed to bring weapons into polling places should be one of those rules!