[EM] average voting power and block votes

[Richard Moore]

Forest Simmons wrote:

> If my toothbrush is identical to yours, it doesn't necessarily follow that
> each of us has only half of a toothbrush.


But if there's only one toothbrush... (In a single-winner 
election there is only one decision. You can't increase the 
power of each and every one of 9 voters beyond 1/9, if 
collectively they have a voting power of 1.)