When your brand is 'too little, too late'

Apologies for having to post about this for the second time this week but this ad. is shouting for attention, yet the only thing that attracts my attention is the discrete small print which identifies the source. Why are local political parties afraid of there own brand? Is it because they don't like to portray themselves as being 'too negative, too much' or a strategic decision to make opinion sound as factual.

I've never heard of a Mac product which lacked a bold Apple sign, nicely placed at the centre of a plain white surface And for that matter a local embelishment project that was not associated with one of the two parties.

Politics apart, what happens when your brand is THE problem? When you have spammed your clients too much that they try to avoid you? What do you do when your brand fails to deliver? What do you do when you've messed up your reputation? Re-brand, Re-launch, Change market or give up?