In the case of Giffords and Arizona, the state of Arizona has a law where if a member of congress is incapacitated for more than three months, they will be removed and a new election held. Giffords has been in violation of this law for a while now, and unfortunately, anyone who brings it up would likely be condemned. It is time for her to do the dignified thing and resign to focus on her recovery and let someone else more able bodied serve. If she recovers to the point where she could serve again, she would doubtless be elected in a landslide. It is unfortunate that this happened, and I admire her strength, but she needs to be the one to resign, not to have this devolve into a partisan war with people calling for her to resign.