MDDA fails "add top". That is, if you add some identical honest votes ranking A top, that can harm A (e.g. by creating a Condorcet winner [who is not A] who then wins, whereas previously there was a Condorcet cycle and A was the winner on approval counts).
Now this may not technically count as an FBC failure, because I daresay there exists some way to rank A top and dishonestly order the remaining candidates, which still leaves A the winner. However, in practice, it may have a very similar effect to FBC failure. In particular, conceivably Deluxe MDDA will still lead to 2-party domination. (I have not looked into this difficult question. I am just saying, it is not obvious.) Some of these remarks also apply to the "DMC" deluxe voting method. wds ---- Election-methods mailing list - see http://electorama.com/em for list info
