An article at the link below reports that injured Congresswoman Gabrielle Giffords could lose her House seat due to a little-known statutory provision in Arizona state law.
This provision could endanger the Democratic congresswoman's hold on her seat through what doctors say will be a protracted medical struggle.
The statute states that if a public officeholder ceases to "discharge the duties of office for the period of three consecutive months," the office shall be deemed vacant - at such time, a special election could be called to fill the vacancy.
More here.