They can point out that if such existed now, there would be no crisis whatsoever since most Nader voters (about half from exit polls) would have ranked Gore second, giving him a full majority of the national popular vote.
Such a strategy would build bridges with progressive Dems (since it would highlight why Gore should become President) while also pushing a system that would allow the Greens to garner far more than 5% in the next Presidential debate. Essentially, there is potential for the Greens to cut a deal with the Dems to support Gore for President in exchange for radically opening the political system to third party voting.
This is a unique political moment- unique not in the rhetorical sense but the truly once in history sense - which Nader and the Greens could use to push to radically reshape the political terrain.
-- Nathan Newman