Like the rest of us, politicians have a doctor who's job it is to take care of their patient's health. Life in politics can especially stressful e.g. Blair's recent heart problems. In England, if a patient becomes "a danger to themselves or others, the Mental Health Act can be invoked. This allows a patient to be placed under an order, a part or 'section' of the Act, and taken to hospital against their will" http://www.bbc.co.uk/health/conditions/mental_health/inside_acute.shtml Now if we were to apply the same rules to politicians as everyone else, then shouldn't we stop politicians who seemed mentally unwell (e.g. depression, drinking) and who were going to cause harm to themselves or others? (In case you are tempted to mention it, Churchill doesn't count ).