YES I’m afraid they do if you’re referring to the matter and any conditions being decided at a General Meeting, and if the Motion is voted upon by a simple majority then 2 for and 2 against would see the Motion is lost in its entirety.
If on the other hand the Owners’ lot Units of Entitlement (UOE) varies from one to another, then any one of them can call for a “poll vote” where the Motion is then determined by the total UOE of those in favour and of those against, with the higher number determining the outcome.