[EM] Another IRV failure

[James Gilmour]

Eric Gorr asked:
> First, is there an official method for how to deal with the case 
> where two or more candidates are tied for least votes? My current 
> implementation throws them all out at the same time, but I have seen 
> another implementation (demochoice.org) which selects one at a time.

In UK legislation for preferential vote elections tied candidates must be excluded one at a time.
The legislation says the returning officer shall determine by lot which candidate to exclude and the
candidate on whom the lot falls is the one to be excluded.
James