This clip really speaks for itself. In this clip from the Dan Abrams show on MSNBC, Congressman Jack Kingston questions why Barack Obama won’t wear an American flag lapel pin.

Only one problem — he wasn’t wearing one as he asked the question. This completely took the air out of his message,and deflected negative attention back on himself, making it impossible to deliver his message about Senator Obama.

It is crucial to stay consistent when delivering your message, no matter what. Inconsistencies within your core message are "message killers" not only taking away the ability to make your point, but putting you instantly on the defensive.