Condo owners using petition to vote off current association board

The unit owner's at my condo complex in Connecticut are trying to vote the current board off and vote in a new one. A petition has circulated and we have more than the needed percentage. My question is, some of the unit owners printed their name, while some signed their name. All have put their unit numbers on the line with their name. The President is saying that the petition is invalid because not all owner's signed their name..is this person correct?